1. Control sample or confirm sample. See if the color and model match the sample;
2. The surface of the button must be free of nicks, cracks, unevenness and obvious scratches;
3. No cracks or bubbles on the back; no rotten edges and uneven thickness;
4, There should be no obvious deformation of the pattern, no white eyes and white circles;
5. The buttonhole should be smooth and unobstructed; the needle eye should not be worn or broken, and should be symmetrical and have no big eyes. If it is a dark eye clasp, the dark eye groove should be smooth and no obvious burst.
6. After plating or other processes, the effect should be uniform. If there are some special effects that are not consistent, they can be packed separately.
7. The color difference of the same batch of buttons should not be lower than the GB250 level 4 standard, and compared with the sample, it should not be lower than the GB250 level 3 standard.
8. Packing inspection, after the appearance inspection / customer required performance test is all qualified, then repacking. A certificate or other label should be included in the packaging. The quantity of packaging shall be in accordance with the regulations, and the actual quantity of each bag shall be consistent with the regulations. If it is found that the tolerance is exceeded due to the difference in thickness or other reasons, it shall be fully inspected.
9. Emergency button / car button / five-claw button should be tested before delivery to test the button performance and usability, and provide molds and test samples to customers.