This standard specifies the terms and definitions, product types and specifications, requirements, testing and judgment rules, product usage instructions, packaging, transportation, and storage of thermal and wet performance knitted underwear. This standard is applicable to the identification of the thermal and moisture properties of knitted underwear made mainly of knitted fabrics under low temperature and low exercise conditions The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB 4856 Packaging of Cotton Knitted Fabrics GB5296.4 Instructions for Use of Consumer Goods Part 4: Textiles and Clothing GB 8629-2001 Household Washing and Drying Procedures for Textile Testing GB 11048-2008 Determination of Thermal and Moisture Resistance under Steady State Conditions for Physiological Comfort of Textiles GB 21655.2 Evaluation of Moisture Absorption and Rapid Drying of Textiles Part 2: Dynamic Moisture Transfer Method

Function of testing report:

1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report

2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms

3. Used as a sales report: issuing legally effective testing reports to make consumers more confident

4. Papers and research: Provide professional personalized testing needs

5. Judicial services: providing scientific, fair, and accurate testing data

6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problems

100% inspection and testing process:

1. Telephone communication and confirmation of requirements

2. Recommend solutions and confirm quotations

3. Mail samples and arrange testing

4. Progress tracking and result feedback

5. Provide reports and after-sales service

6. If urgent or priority processing is required

Testing and testing characteristics:

1. The testing industry is fully covered, meeting different testing needs

2. Fully cover the laboratory and allocate localized testing nearby

3. Engineers provide one-on-one services to make testing more accurate

4. Free initial testing, with no testing fees charged

5. Self service order delivery for free on-site sampling

6. Short cycle, low cost, and attentive service

7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc

8. The testing report is authoritative and effective, and is generally used in China