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How can I make sure my order with “0” defective rate?

How can I make sure my order with “0” defective rate?

2020-09-16

Besides rigorous quality control for raw materials and production process, each batch of goods must be 100% full inspection in sizes and appearance before shipment.  Please don’t forget to view our Quality Control” page for more information.


≥10 Sizes 100% Full Inspection

Sizes inspection including: diameter, height, diamond thickness, chamfer and geometrical sizes(verticality, roundness, flatness, parallelism, value of R)


≥20 Items of Appearance Defect 100% Inspection

Appearance inspection including: cracks, edge chips, scratch, delimination, pit, black spot, irregular color, corrosion, etc. The appearance is inspected by 20X microscope.