This paper systematically analyzes the main differences between the GB/T 22849—2024 "Knitted T-shirt" standard and the 2014 standard. Through detailed analysis and comparison, it is found that the new version of the standard has been significantly improved in terms of the clarity of the scope of application, the comprehensiveness of assessment indicators and the standardization of test methods, providing a more scientific basis for industry production and quality testing.

Addressing the industry-wide common problem of localized yellowing in down jackets made of nylon/spandex blended fabrics after storage, this study comprehensively revealed the complex causes of yellowing through systematic multi-dimensional analysis methods. These included optical microscopy, scanning electron microscopy observation, quantitative component analysis, a self-constructed accelerated humid-heat storage model, and precise traceability via gas chromatography-mass spectrometry (GC-MS). The results indicated that the yellowing is a typical result of multi-factor coupling: the oxidative rancidity of residual human sebum (rich in palmitic acid and oleic acid) under high-temperature and high-humidity storage conditions serves as the main chromogenic source; meanwhile, the spandex fibers in the fabric degrade under humid-heat conditions, a process that readily produces acidic substances such as carbon dioxide and carbonyl compounds, which significantly reduce the pH of the fabric.

To improve the accuracy and reliability of laboratory test results for geo-textile tensile strength, while further elevating the technical competence of laboratories in Liaoning Province within this testing domain, a province-wide proficiency testing program for geo-textile tensile strength determination was organized. A total of 92 laboratories participated in this proficiency testing program. Through two rounds of unified sample testing and data verification, a comprehensive evaluation of the testing technical capabilities of each laboratory was carried out. The results demonstrated that the satisfaction rate of the participating laboratories’ test outcomes reached 100%, which indicates that the laboratories involved in this proficiency testing exhibit a relatively high overall level in geo-textile tensile strength determination.

Based on the panel data of textile enterprises listed on the market from 2014 to 2023, the artificial intelligence and supply chain resilience of textile enterprises are measured. This paper also constructs a two-way fixed effect model to analyze the effect of artificial intelligence on textile enterprises' supply chain resilience. The results show that the development of artificial intelligence has a significant positive effect on the supply chain resilience of textile enterprises, and digital innovation and total factor productivity play an intermediary role. And there is heterogeneity between different regions and enterprises with different property rights. This conclusion is still valid after the test of stability and endogenesis. Therefore, it is proposed to strengthen the R & D and application of artificial intelligence technology; to promote the development of artificial intelligence according to enterprises' policies and local conditions; to deepen digital innovation and enhance total factor productivity to ensure the supply chain safety of textile enterprises.

This article conducts a comprehensive comparison and analysis of two versions of the standard: GB 18383—2025 "General Technical Requirements for Wadding Fiber Products" and GB 18383—2007 "General Technical Requirements for Wadding Fiber Products". Focusing on the differences in core contents such as terminology definitions, raw material control, technical indicators, testing methods, and labeling requirements, it provides technical guidance and reference for enterprises producing wadding fiber products, inspection and testing institutions, consumers, and regulatory authorities.

GB/T 17591-2025 "Flame retardant fabrics" has been released on February 28, 2025 and will be formally implemented from September 1, 2025, replacing GB/T 17591—2006 "Flame Retardant Fabrics", which was revised in 2006. By comparing the two versions of standards, the main changes and differences between the two are analyzed to provide reference for relevant enterprises and testing organizations.

Against the backdrop of the "dual carbon" goals, textile enterprises face an urgent need for transformation, and optimizing their ESG performance has become a critical issue to be addressed. Selecting 46 textile enterprises as research subjects and based on the "Technology-Organization-Environment" framework, this study employs fuzzy-set Qualitative Comparative Analysis (fsQCA) to systematically analyze the impact of seven antecedent conditions on corporate ESG performance. The findings reveal that: (1) No single antecedent condition constitutes a necessary condition for high-level ESG performance. (2) There are four configurations leading to high-level ESG performance: the single-core technology-environment linkage digital transformation-driven type; the single-core technology-environment linkage innovation capability-driven type; the double-core technology-environment linkage adaptation capability-driven type; and the technology-organization-environment linkage adaptation capability-driven type.

product quality and safety risk prevention and control is the core proposition of the modernization of market regulation. To build a scientific and perfect risk prediction and prevention and control mechanism, we need to promote the system from three dimensions of risk identification, prediction and early warning and collaborative disposal, and establish a multidimensional risk classification system by integrating multi-source risk information, which can accurately describe the generation mechanism and transmission law of quality and safety risk. Using digital intelligence technology to build an early warning model to achieve dynamic monitoring and accurate prediction of risks, form a prevention and control pattern of multi-agent collaboration and whole process closed-loop management, and promote the transformation of regulatory mode from post disposal to pre prevention. This mechanism innovation provides a systematic solution for improving product quality and safety governance ability, protecting consumer rights and interests, and promoting high-quality industrial development.

Against the backdrop of escalating risks in the global industrial chain, the textile industry urgently needs to leverage the digital economy to enhance resilience and break through development bottlenecks. This paper employs panel data from 69 listed textile companies in China from 2010 to 2023 to empirically examine the impact of digital economic development on the resilience of the textile industry chain and its underlying mechanisms. The findings reveal that the development of the digital economy can significantly enhance the resilience of the textile industry chain, exerting its influence through promoting green technological innovation at the macro level and reducing corporate management costs at the micro level. Additionally, the resilience-enhancing effects of the digital economy are more pronounced for enterprises in eastern regions and non-state-owned enterprises, while their impact on enterprises in central and western regions and state-owned enterprises is relatively limited. Robustness tests and endogeneity tests further validate the reliability of the research conclusions. Within the framework of "Digital China", this study provides a solid theoretical basis and empirical evidence for accelerating the enhancement of industrial chain resilience and fostering new momentum for high-quality development.

As a distinctive natural fiber peculiar to China, tussah silk features excellent wearability, and plant-based dyes hold great potential for green textiles and sustainable development,this paper elaborates on the dyeing mechanism of functional plant dyes on tussah silk fibers. Additionally, it discusses the dyeing processes of different plant dyes, as well as the physicochemical properties and functional characteristics of the dyed fabrics, and provides a theoretical basis for the optimization and industrial application of plant dyes in tussah silk dyeing.

This paper in-depth analysis the monitoring results, that Anhui Fiber Inspection Bureau organized and carried out quality monitoring of silk quilts and down coats throughout Anhui province in 2025, propose quality and technical assistance measures and overall regulatory suggestions, in order to provide useful reference for the quality supervision and improvement of silk quilts and down coats in Anhui province.

This study systematically investigates the influence mechanism of the interaction effects between down loftiness and filling density on the thermal insulation performance of down-filled apparel. Four groups of white duck down with similar down content (77.0%, 86.0%, 88.5%, 90.0%) but significant loftiness differences were tested using a flat-plate thermal insulation analyzer (per GB/T 35762—2017) across 11 filling density gradients (60 g/m²~210 g/m², 15 g/m² increments). Key findings reveal: Minor loftiness differences (0.6 cm) only enhance thermal resistance at high filling densities (≥180 g/m²), e.g., 4.5% improvement for 77.0% down content group; Moderate differences (1.0 cm) consistently improve insulation (average +3.2% thermal resistance for 86.0% down group), though compression at 210 g/m² diminishes gains; Large differences (1.6 cm) boost thermal resistance by 8.1% at low filling densities (≤105 g/m²) for 88.5% down content, but excessive compression at high densities reduces thermal resistance by 2.3%; High-loft down (19.3 cm) achieves equivalent insulation at 165 g/m² to conventional down at 180 g/m², enabling lightweight design. The research uncovers a critical interaction between loftiness and filling density. We propose an industrial optimization principle: prioritize high loftiness for low-density fills; avoid over-compression in high-density applications. This framework supports balanced performance enhancement and cost efficiency in down apparel production.

This study selected four cotton samples with a moisture regain ranging from 5.5% to 11.5%. A High Volume Instrument (HVI) was used to measure the key physical indicators, and the influence law of moisture regain on the physical properties of cotton fibers was systematically quantified. The results showed that the degrees of influence on different physical parameters varied. Among them, the length and breaking strength were the most sensitive to changes in moisture regain, followed by the length uniformity index and yellowness. The reflectance was less affected, and the micronaire value was the least affected. The study confirmed that standardized temperature and humidity conditions play a decisive role in ensuring the accuracy and comparability of test results. Correctly understanding the influence of moisture regain on the properties of cotton fibers and taking corresponding measures are of great value in improving the accuracy of cotton quality assessment, optimizing the processing technology, and enhancing the quality of spun yarn.

This study utilizes panel data from China’s A-share listed textile enterprises spanning 2012 to 2023. Through the application of mediation effect models and moderation effect models, it investigates the impact of digital-intelligent transformation on the total factor productivity (TFP) of textile enterprises and its underlying mechanisms. The findings indicate that: (1) Digital-intelligent transformation significantly promotes the TFP of textile enterprises; (2) Mechanism tests reveal that digital-intelligent transformation enhances TFP by improving the profitability and operational efficiency of textile enterprises; (3) Financing constraints exert a significantly negative moderating effect on the relationship between digital-intelligent transformation and TFP; (4) Heterogeneity analysis shows that the promotional effect of digital-intelligent transformation on TFP is more pronounced in large-scale enterprises, state-owned enterprises , and enterprises located in the Eastern region of China.

This article compares and analyzes the GB/T 22849—2014 "Knitted T-shirts" and GB/T 22849—2024 "Knitted T-shirts",exploring optimization directions of the new standard through dimensions including scope of application, terms and definitions, technical requirements, testing methods, inspection rules, as well as labeling and packaging. Through data comparison, this paper demonstrates the positive implications of the new standard in improving product quality, standardizing market regulations, and promoting green transformation.

Based on the testing data of fiber composition and content of 9 towel samples conducted by inspection and testing institutions, this paper conducts an in-depth analysis of the phenomenon of significant differences in test results among different institutions. The research results show that these differences mainly stem from key issues such as inconsistent sampling methods, high difficulty in identifying multi-component fibers, and difficulty in determining other fibers with low content. In response to the above problems, this paper puts forward suggestions including standardizing sampling methods, strengthening the application of fiber identification technologies, improving the professional quality of inspectors, and optimizing product standards, so as to enhance the accuracy and scientificity of the test results for fiber composition and content of towel products.

According to the method 3 in the standard GB/T 8427—2019 "Textile-Tests for color fastness -color fastness to artificial light: Xenon arc" one stage and two stage tests were conducted to compare and analyze the results of one stage and two stages of light color fastness. The results showed that the results of one stage were basically consistent with those of the two stages, with a few differences of half a level. However, the final results reported by the two stages were consistent with those of one stage, providing a reference for enterprises when selecting the light color fastness exposure stage.

As a class of nonionic surfactants, Alkylphenol Ethoxylates(APEO) has been widely used in degreasing, washing, dyeing finishing and other key processes in the textile industry for a long time due to their excellent emulsifying, dispersing, solubilizing and penetrating properties. However, their metabolite AP has environmental hormone effects, biological toxicity and endocrine disruption, which pose a potential threat to the ecological environment and human health, and has become one of the focuses of textile ecological security control at home and abroad. Due to the special structure of wool and cashmere textiles, the problem of APEO residue has attracted much attention. In this paper the main sources of APEO in wool and cashmere textiles were analyzed, and the current limit standard system and limit of APEO at home and abroad were sorted out, combined with the test data in actual products, three suggestions for supervision and use were put forward, which provided theoretical support and technical reference for wool and cashmere textile manufacturers to control APEO residues and meet the requirements of international and domestic regulation and standards.

This paper analyzes four main methods for testing the waterproof performance of textiles, including the water repellency test (GB/T 4745—2012), the hydrostatic pressure test (GB/T 4744—2013), the horizontal spray rain test (GB/T 23321—2009), and the Bundesmann rain test (GB/T 14577—1993). By comparing the testing principles, evaluation indicators, test results, and applicable conditions of each method, it focuses on exploring the evaluation characteristics of different testing methods in terms of surface water repellency, anti—permeability performance, and dynamic waterproofness. The research shows that the water repellency test is suitable for the rapid detection of daily water—repellent products, the hydrostatic pressure test is more appropriate for evaluating products with high waterproof pressure requirements, and the two rain tests can effectively simulate the waterproof performance under actual harsh weather conditions. The research results provide a theoretical basis and practical guidance for textile manufacturers to select appropriate waterproof performance evaluation methods according to product applications.

This paper deeply explores the feasibility and paths for smartphones to replace industrial cameras in achieving lightweight upgrades of quality inspection photography systems. Traditional quality inspection photography systems mostly use industrial cameras as core equipment, which meet the basic needs of quality inspection work with high-precision imaging and stable performance. The main processes include barcode collection, sample placement, shooting control, and image uploading. By comparing the differences between smartphones and industrial cameras in dimensions such as performance, cost, and operation, and combining with the actual needs of quality inspection work, this paper analyzes the role of smartphones in promoting the lightweight upgrade of quality inspection photography systems during the replacement of industrial cameras. Through paths such as reasonable equipment selection, software system construction, personnel training, and system testing and optimization, the transformation of quality inspection photography systems can be promoted, efficiency and quality can be improved, operational costs can be reduced, and the intelligent development of the quality inspection industry can be facilitated.

This article systematically analyzes the key precautions and influencing factors in the process of detecting the anti-pilling properties of fabrics by the pilling box method. The factors that may affect the accuracy of the test results were discussed from aspects such as sample preparation, test operation, result rating to report recording, including equipment parameter control, cork liner status, sample carrier tube characteristics, rating environment and personnel requirements, etc. The advantages of the pilling box method in terms of standardized operation and result comparability were summarized, and its limitations in simulating actual usage conditions, equipment costs and human factors were also pointed out. At the same time, revision suggestions were put forward in response to the problems such as the broad range of some technical parameters and insufficient safety of reagents in the standard, and the future development direction of combining intelligent technologies such as image recognition to improve the automation and accuracy of detection was also prospected.

This article compares and analyzes the 2024 edition (GB/T 31900—2024 "Woven Children's Clothing" and the 2015 edition (GB/T 31900—2015 "Woven Children's Clothing") of the national standard in terms of scope, normative references, terminology, requirements, test methods, and inspection rules. It elaborates on the modified and newly added technical indicators between the two versions, providing technical guidance and references for relevant manufacturers, testing and inspection institutions, and consumers.

Normally, sulfuricacid method is widely used in the laboratory. At room temperature, high viscosity of 75% sulfuric acid can lead to incomplete dissolution, and the testing time is too long. Therefore, we propose an improved 20% hydrochloric acid method. The research selected a wool/silk blended suit fabric as the sample and dissolved the silk in the sample by treating it at 70 ℃ for 30 minutes, thereby determining the content of silk and wool in the sample. The same batch of samples was also dissolved using the 75% sulfuric acid method, comparison of the data between the two methods revealed that the results from the 20% hydrochloric acid method were closer to the actual values of the samples. Moreover, this method took only half the time required by the 75% sulfuric acid method. This study provides a reference for addressing issues such as incomplete dissolution and prolonged processing time associated with the 75% sulfuric acid method.

The textile industry, as a traditional pillar industry and an important livelihood industry in China, is undergoing unprecedented profound changes. Based on the multiple backgrounds of the global digital economy wave, the “dual carbon” goal guidance, and the reconstruction of the industrial chain, this article analyzes the current development status, challenges, and opportunities of the textile industry from four dimensions: intelligent and digital transformation, green materials and technological innovation, industrial chain collaboration and regional development, as well as branding and international development. The conclusion is drawn that in the future, the industry needs to continue to promote intelligent, green, collaborative, and international development to achieve higher-quality and more sustainable industrial upgrading and consolidate global competitive advantages.

This study systematically addressed the challenge of false-positive results in benzyl chloride detection for textiles, which arises from the thermal degradation of benzalkonium chloride in the GC injection port. Firstly, by optimizing the GC-MS injection port temperature, it was found that the benzyl chloride signal remained stable within the 120 ℃~220 ℃ range, while benzalkonium chloride began to degrade and produce false-positive signals at 150 ℃ with the signal intensity increasing with temperature. Based on this, a "dual-temperature injection and comparative analysis" method was established. By comparing signal differences of the same sample at low (120 ℃~140 ℃) and high temperatures, false-positive interference can be effectively identified and subtracted. Secondly, an alternative method based on HPLC-DAD was developed, fundamentally avoiding thermal degradation issues. This method, employing a ZORBAX SB-CN column coupled with nitrogen blow-down concentration as sample pretreatment, achieved detection sensitivity for benzyl chloride that meets relevant standard requirements, with an average recovery of 81.3% and good precision. The research provides a reliable dual technical strategy for the accurate detection of benzyl chloride.

To understand the quality and safety status of children's and infants' clothing in the circulation field of Ningxia Hui Autonomous Region, strengthen product quality supervision, and protect the physical health of minors, this study takes the data from the 2025 special supervision and random inspection of children's clothing as the research object, and carries out a quality analysis on the inspection results of 83 batches of children's clothing from 52 business entities in Ningxia. The inspections are conducted in accordance with national standards including GB 18401—2021, GB 31701—2015 and GB/T 29862—2013. The inspection items cover fiber content, pH value, formaldehyde content, carcinogenic aromatic amine dyes, color fastness, cord safety and sharpness of accessories. The results show that the unqualified rate of the sampled products is 7.23%, which is 16.58 percentage points lower than that of the previous year, and the overall product quality presents a steady improvement trend. The unqualified items are mainly concentrated in fiber content and cord safety, while mandatory safety indicators such as formaldehyde and carcinogenic aromatic amine dyes all meet the requirements. This study can provide data support and reference for the quality supervision, risk prevention and control, and standardized development of the children's and infants' clothing industry.

This paper systematically compares and analyzes the technical content changes between the national standards GB/T 3920—2008 and GB/T 3920—2024. The research indicates that GB/T 3920—2024 significantly enhances the precision and reproducibility of the test method by introducing stricter equipment tolerances, a unified calculation formula for "liquid yield", and more comprehensive reporting requirements. The implementation of the new standard will profoundly impact the quality control processes of textile manufacturers, the operating procedures of testing institutions, and the overall technological advancement of the industry, providing solid technical support for improving the quality of Chinese textiles ad facilitating smooth international trade.

Regenerated polyester and virgin polyester were modified using the fluorine-free water repellent VELYKE FW-002. The differences between the modified and unmodified regenerated polyester and virgin polyester were analyzed by Fourier transform infrared spectroscopy, differential scanning calorimetry and hydrostatic pressure tester. The results showed that there was no significant difference in molecular structure between the modified regenerated polyester and virgin polyester; however, the glass transition temperature, melting point and melting enthalpy of the regenerated polyester were all lower than those of the virgin polyester. The water repellency of the modified regenerated polyester and virgin polyester was not significantly different, and their water repellent durability was also almost the same, which could meet the requirements of daily water repellent fabrics. This provides favorable technical support for the functional application of recycled polyester.

GB/T 45266—2025 "Classification of Consumer Quality Items for Down Products" is a technical support document for the quality classification of consumer products in the down product field. The standard was formulated based on the actual situation of China's down product industry, fully considering the needs of industry development. Three core indicators, namely fluffiness, velvet content, and turbidity, were selected as the classification indicators. The classification indicators were confirmed by collecting more than 20000 big data results from authoritative inspection and testing institutions in the industry, and the scientificity and rationality of the core indicators were verified by purchasing 60 different brands of down comforters in the market. This standard meets the production, use, and testing requirements in China, ensuring the quality of down products, promoting the healthy development of the industry, and meeting market demand, which is of great significance.

In this paper, the research progress and application of anti-mosquito fabric based on microcapsule sustained release technology were summarized. The importance of anti-mosquito, the mechanism of anti-mosquito, the characteristics of anti-mosquito finishing agent and various anti-mosquito fabrics were introduced. The latest research progress of anti-mosquito fabric finishing was emphatically emphasized, and the research direction and development trend of anti-mosquito fabric in the future were prospected.

This study investigated the thermal blocking property of 50 representative commercially available umbrellas using a self-developed testing system. The results revealed significant variations in thermal blocking performance among different umbrellas, with thermal blocking rates ranging from 2.3% to 83.0%, demonstrating a clear performance gradient. Among them, plastic umbrellas exhibit very low thermal shielding capability (2.3%~29.9%); ordinary fabric umbrellas show moderate performance (37.1%~58.8%); Coated umbrellas and double-layer/wind-resistant fabric umbrellas demonstrated superior thermal shielding performance, with shading rates of 61.4%~83.0% and 57.8%~75.4% respectively. This study represents the first application of a three-dimensional testing system ("metal manikin-complete umbrella specimen-solar simulator") for evaluating the thermal blocking performance of full-scale umbrellas, the whole-umbrella testing method effectively quantified and differentiated the thermal blocking properties of various umbrellas, systematically revealing the performance distribution characteristics of commercial umbrellas. The study confirms that while the canopy material forms the foundation of thermal shielding performance, factors such as the three-dimensional structure of the entire umbrella and the design of the ribs collectively contribute to performance variations among products made of the same material. The findings provide solid data support and theoretical foundation for product improvement and informed consumer decision-making.

In the testing of pH value in textiles, it has been found that the use of containers with different degrees of airtightness can lead to varying degrees of differences in the measurement results of the pH value in textiles, which may affect the accuracy of the test results. In order to ensure the rigor of the test, this paper tested 17 samples with different pH value, using four types of containers with different degrees of airtightness, in accordance with GB/T 7573—2009, so as to study the influence of the airtightness of extraction containers on the pH test results of textiles. The results showed that for acidic to neutral textiles, the airtightness of containers had little or no effect on the pH test results, while for alkaline textiles, it had varying degrees of influence. Since the acidity or alkalinity of textiles cannot be predicted before the pH test, extraction containers with good airtightness should be selected to ensure the accuracy of the test.

This paper tests and analyzes 28 types of melt-blown polypropylene/wood pulp fiber composite nonwovens with different component ratios and basis weights. It focuses on key performance indicators, including liquid absorption capacity, breaking strength, breaking elongation, and linting performance. The study explores how fiber ratio and basis weight affect material properties. The experimental results showed that basis weight was positively correlated with liquid absorption capacity, breaking strength, and breaking elongation. As basis weight increased, both the liquid absorption and mechanical properties of the material improved significantly. A higher content of wood pulp fiber enhanced the material’s hydrophilicity and liquid absorption capacity, while a higher proportion of polypropylene was more beneficial for improving breaking strength. No obvious regular correlation was found between linting performance and basis weight or fiber component ratio. This may be due to the combined influence of multiple factors, such as melt-blown process parameters and fiber entanglement degree.

This paper focuses on GB/T 15268—2008 "Fresh Mulberry Silkworm Cocoons" and GB/T 15268—2024 "Fresh Mulberry Silkworm Cocoons", systematically sorts out the core differences between the two standards in terms of terminology definitions, quality evaluation systems, inspection processes, and industrial adaptability. Combined with the non-cotton fiber notarization inspection system and industrial development needs, it analyzes the role of the new standard in promoting the quality monitoring of fresh mulberry silkworm cocoons and the upgrading of the industrial chain. The research shows that GB/T 15268—2024 has significantly improved the scientificity and industrial applicability of the standard by building a multi-dimensional evaluation system of "basic indicators + correction indicators", optimizing the inspection process, and strengthening the connection with non-cotton fiber quality notarization inspection, providing more accurate technical support for the quality grading, market transactions, and quality traceability of fresh mulberry silkworm cocoons.

This article comprehensively compares and analyzes the development and changes of the Chinese textile industry standards FZ/T 62030—2015 "Woolen Fabric Quilt Cover" and FZ/T 62027—2024 "Woolen Fabric Bedding" in the past decade. Research has found that the new standards have significantly improved and perfected product scope, technical requirements, inspection methods, and other aspects, reflecting the advancement of industry technology and the improvement of quality control level. The new standards place greater emphasis on product safety, environmental friendliness, and functionality, while simplifying some inspection procedures and improving the practicality and operability of the standards.

This paper systematically analyzes the construction of a quality management system for the verification and calibration of measuring instruments. Based on a review of key domestic and international standards such as ISO 10012 Measurement Management System and JJF 1069 Technical Assessment Criteria for Legal Metrology Institutions, it proposes pathways and optimization strategies for the quality management system from four dimensions: personnel qualification management, process standardization, continuous improvement mechanisms, and information technology empowerment. The aim is to address issues such as non-standardized verification and calibration processes and inconsistent management standards in the current metrology field.

FZ/T 73053—2025 "Knitted Down Garments" was released on April 10, 2025 and is scheduled to come into official effect on May 1, 2027. Upon its implementation, the previous version FZ/T 73053—2015 "Knitted Down Garments" will be formally abolished. This paper conducts a comparative analysis of the similarities and disparities between the two versions, focusing on core aspects such as scope of application, normative references, intrinsic quality requirements, testing methodologies, appearance quality criteria, and product labeling specifications.

Dichloromethane-soluble matter refer to the residual oil substances, shrink prevention agents, anti-static agents, anti-tangle agents or softening agents, etc. that are present in cashmere or wool products. Exceeding the limit of dichloromethane-soluble matter will affect the quality of the products. This paper analyzes the main sources of dichloromethane-soluble matter in wool (cashmere) products, sorts out the restrictions on dichloromethane-soluble matter in relevant standards of Chinese wool (cashmere) products, and proposes control suggestions during the production process, providing technical reference for wool (cashmere) product manufacturers to control dichloromethane soluble substances.

Cotton is an important agricultural product related to the national economy and people's livelihood in China, and its quality and safety supervision is a fundamental work in the cotton industry. Through years of practical exploration, China has formed a cotton quality and safety supervision model mainly based on official classification and supplemented by supervision inspection, which effectively promotes the improvement of cotton quality and industrial upgrading in China, significantly enhances international competitiveness, and has been widely recognized by the industry. This paper aims to analyze the significant role and practical implications of China's cotton quality official classification system. in the cotton industry chain by examining the historical facts of the establishment, development, and improvement of China's cotton quality official classification system, and proposes constructive suggestions for further improving China's cotton quality official classification system.

This article introduces the PDCA cycle theory into the field of product inspection quality management, and analyzes the inherent driving role of the PDCA cycle in implementing corrective and preventive measures, optimizing resource allocation, and improving the effectiveness of management reviews around the existing problems in product inspection. The article further explores the collaborative application mode of PDCA cycle with information management system, personnel capacity building, and standardized document control, and points out that the effectiveness of closed-loop connection in each stage is the key for inspection institutions to break through management bottlenecks and achieve efficiency optimization. This study provides a practical path and operational guidance for product inspection agencies to deepen the application of PDCA tools and build a long-term quality improvement mechanism.