1. Compare samples or confirm small samples. See if the color and model are in line with the sample;
2. There should be no cracks, gaps, uneven and obvious scratches on the surface of the buttons;
3. There are no car cracks and steam foam on the face;
4. The pattern should not be obviously changed. Phenomenon, no white eye, white circle and other phenomena;
5. The eyebrows should be smooth and smooth; the needle eyes are all worn and ruptured, and they must be symmetrical and have no big eyes. If it is a dark -eyed buckle, the dark eye slot should be smooth and no obvious burst.
6. After the electroplating or other process processing, the effect should be uniform. If some special effects cannot be consistent, you can pack it separately.
7. The color difference between the same batch of resin buttons should not be lower than the GB250 four -level standard. Compared with the coming, it should not be less than the GB250 three -level standard (dyeing standard)
