This standard specifies the technical requirements, sampling, testing methods, quality evaluation, handover acceptance, packaging, marking, transportation, and storage of refined jute fibers. This standard is applicable to identifying the quality of refined jute fibers. 2 Normative References: The clauses in the following documents become clauses of this standard through reference in this standard. For dated reference documents, all subsequent amendments (excluding corrected content) or revisions are not applicable to this standard. However, parties to agreements based on this standard are encouraged to study whether the latest versions of these documents can be used. For undated references, the latest version applies to this standard. GB/T6529 Standard Atmosphere for Humidity Control and Testing of Textiles (ISO 139; 2005, MOD) GB/T8170 Rules for Rounding off Values and Representation and Determination of Limit Values GB/T 9994 Determination of Moisture Content and Moisture regain of Textile Materials GB/T 9995 Oven drying method GB/T 18147.1 Hemp Fiber Test Method 3 Terms and definitions The following terms and definitions apply to this standard. 3.1 Jute is a general term for the jute (round fruited species) plant and the long thistle jute (long fruited species) plant, phloem, and fiber in the Jute family. 3.2 Raw jute is the bast of jute that has been peeled from the hemp stem without degumming treatment. 3.3 cooked jute fiber The fiber obtained from degumming of raw jute. 3.4 Refinement jute fiber is a fiber with significantly improved spinning performance after refined treatment of cooked jute, with a fineness of over 350 metric fibers. 3.5 Impurities: Non hemp fiber debris such as dander, hemp bone, and dust. 3.6 Hard Thread A thick and hard fiber bundle. 3.7 Residual gum content: The percentage of residual gum (pectin, hemicellulose, and lignin) in hemp fibers by weight

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