This standard specifies the terms and definitions, specification markings, requirements, test methods, inspection rules, packaging, and labeling of raw silk/spandex wrapped silk. This standard applies to raw silk/spandex wrapped silk with single or double wrapping methods. The following normative references are essential for the application of this document. For all 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 1798-2008 Raw Silk Test Methods GB/T 2910 (All Parts) Quantitative Chemical Analysis of Textiles GB/T 2543.1 Textiles - Determination of Yarn Twist - Part 1: Direct Counting Method GB/T 3916 Textiles - Determination of Single Yarn Breaking Strength and Elongation at Break (CRE Method) GB/T 4743-2009 Textiles - Determination of Yarn Yarn Linear Density by the Twisted Yarn Method - GB/T 6529- Standard Atmosphere for Moisture Control and Testing of Textiles - GB/T 8170 Rules for Rounding off Values and Representation and Determination of Limit Values - GB/T 8693- Designation of Yarns for Textiles - GB/T 29862- Designation of Fiber Content for Textiles - FZ/T 01057 (All Parts) Textile Fiber Identification Test Method FZ/T 01095 Test Method 3 for Fiber Content of Textile Spandex Products. The following terms and definitions apply to this document 3.1 Raw Silk/Spandex Wrapped Yarn is a composite wire that uses spandex filament as the core wire and uses the wrapping process to wrap the raw silk in a spiral shape on the surface of the drawn core wire. 3.2 Wrap twist refers to the density of raw silk wrapped in a spiral shape on the surface of the core wire. Expressed in laps per meter

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