Injection molded zippers/zipper inspection: Most of the materials used for producing injection molded zippers are polyformaldehyde. Firstly, the material is color matched, and the ribbon material is usually polyester silk. Then, it is woven into a ribbon and dyed. Based on this, it is treated with discharge, followed by a dental cleaning process. Then, the upper and lower stop bolt blocks are installed, cut off, and finally inspected and packaged for export sales. Zipper inspection scope: Luggage zippers, backpack zippers, injection molded zippers, waterproof zippers, metal zippers, plush toy zippers, nylon zippers, invisible zipper zipper inspection items: heat sealing strength inspection, coating inspection, heavy metal inspection, performance inspection, single wire elongation and contraction inspection, locking force inspection, color fastness inspection, strength inspection, durability inspection, repeated closing test, environmental protection inspection, shrinkage rate inspection, and pull head binding force inspection, Quality testing, flat tensile strength testing, torque testing, aging testing, etc. Zipper related testing standards GB/T 18746-2015 Zipper terminology GA 729-2007 Police uniform materials Zipper AS 2332-2003 Zipper ASTM D2051-2014 Test for surface washing resistance of zippers ASTM D2052-2005 (2015) Test for color fastness to dry cleaning of zippers ASTM D2053-1999 (2010) Test for color fastness to light of zippers ASTM D2054-1999 (2015) Test for abrasion and discoloration of zipper belts ASTM D2057-2005 (2015) Test for color fastness to washing of zippers ASTM D2058-2003 (2014) Test for surface dry cleaning resistance of zippers ASTM D2059/D2059M-2003 (2014) Test for salt spray corrosion resistance of zippers ASTM D2060-2014e1 Test for measuring zipper size ASTM D2061-2007 Test for zipper strength ASTM D2061-2007 (2013) Test for zipper strength ASTM D2062-2003 (2014) zipper usability test ASTM D3657-2003 (2014) zipper size specification ASTM D4465-2005 (2015) Performance specifications for zippers for coarse twill cotton pants DIN EN 13780-2003 Determination of longitudinal shear strength of zippers ISO 10717-2010 Test method for shoe zippers Burst strength ISO 10748-2011 Test method for shoe zippers Zipper head lock strength ISO FDIS 10748-2010 Test method for shoe zippers Zipper head lock strength QB/T 2171-2014 Metal zipper QB/T 2172-2014 Injection molded zipper QB/T 2173-2014 Nylon zipper

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