1 Scope

This standard specifies the specifications, requirements, testing, judgment rules, product instructions, packaging, transportation, and storage of knitted flat knitting machine collars This standard is applicable to identifying the quality of knitted collars produced by flat knitting machines using textile fibers as the main raw material. Knitted cuffs and knitted hem products produced by the flat knitting machine can be referred to and executed

2 Normative References

The following documents 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 amendments) applies to this document

GB/T 250 Textiles - Color Fastness Testing - Grey Sample Card for Evaluating Discoloration

GB/T 2910 (All Parts) - Quantitative Chemical Analysis of Textiles

GB/T 2912.1- Determination of Formaldehyde in Textiles - Part 1: Free and Hydrolyzed Formaldehyde (Water Extraction Method)

GB/T 3819 Textiles - Determination of Folding Recovery of Fabrics - Recovery Angle Method

GB/T 3920 Textiles - Tests for Color Fastness to Rubbing

GB/T 3921-2008 Textiles - Tests for Color Fastness to Soap

GB/T 3922 Textiles - Test Method for Color Fastness to Sweat

GB/T 4802.3 Textiles - Determination of Pilling and Pilling Properties of Fabrics - Part 3: Pilling Box Method

GB/T 4856 Packaging of Cotton Knitted Fabrics

GB5296.4 Consumer Goods Packaging Instructions Part 4: Textiles and Clothing

GB/T 5713 Textiles - Tests for Color Fastness to Water

GB/T 6529 Textiles - Standard Atmosphere for Humidification and Testing

GB/T 7573 Textiles - Determination of pH Value of Water Extraction Solution

GB/T 8170 Rules for Rounding off Values and Representation and Determination of Limit Values

GB/T 8427-2008 Textiles - Color Fastness Tests to Artificial Light - Color Fastness to Xenon Arc

GB/T 8629-2001 Textiles - Home Wash for Testing Polyester and drying procedures

GB 9994 Standard moisture regain for textile materials

GB/T 14576 Textiles - Tests for Color Fastness - Combined Color Fastness to Light and Sweat

GB/T 17592 Textiles - Determination of Prohibited Azo Dyes

GB 18401 National Basic Safety Technical Specifications for Textile Products

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