Why JINGYING Jewelry Factory adopts a strict quality control system to reduce product defects

In the jewelry industry, JINGYING Jewelry Factory has built a strict quality system:

1. Raw material testing:

- Silver materials are tested with XRF spectrometer before storage to ensure that the 925 silver content is 92.5%±0.5%

- Zircon is cut with 5A grade, and the fire color is ≥90% (ordinary products are only 70%)

2. Process monitoring:

- The temperature of the wax injection link is accurate to 68±1℃ to avoid shrinkage and deformation

- The inlay process is operated under a 40x microscope, and the claw symmetry error is ≤0.01mm

3. Final inspection standards:

- The surface finish must reach level 12 (equivalent to a mirror effect)

- The necklace buckle tensile test is ≥5kg, and the opening and closing life is more than 5000 times

After-sales guarantee:

- Provide 3 years of free electroplating repair service

- Cross-border orders receive a 1% bonus of spare parts for emergency restocking.

Industry comparisons show that Shenzhen factories spend an average of 1.5 times more time on quality inspection than factories in other regions, yet the customer complaint rate is as low as 0.07%.