1 Scope: This standard specifies the terms and definitions, labeling, requirements, grading, inspection rules, inspection methods, packaging, and labeling of coarse specification raw silk. This standard is applicable to twisted raw silk with a nominal fiber size of 69denier (76.7dtex) or above. 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/T 250 Textiles - Evaluation of Color Fastness - Grey Sample Card for Discoloration - GB/T 1797-2008 Raw Silk - GB/T 1798-2008 Raw Silk Test Methods - GB/T 6529 Standard Atmosphere for Moisture Conditioning and Testing of Textiles - GB/T 8170 Rules for Rounding off Values and Representation and Determination of Limit Values - GB/T 9995 Determination of Moisture Content and Moisture regain of Textile Materials - Oven Kilo drying Method -3 Terms and Definitions The following terms and definitions apply to this document. 3.1 Coarse raw silk with a nominal size of 69denier (76.7dtex) or above

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