hello
This is the inspection mark. Generally speaking, indicators have three colors, red, yellow and green.
Red indicates defect (the part must be scrapped or replaced).
Yellow represents defective products (need to be repaired).
Green indicates that the defective product has been processed or replaced and will flow into the next process.
Hehe, the tender must be taken down in the next process, otherwise the parties will be fined.
Your luck is not generally good, and this standard makes you meet it.
There's nothing wrong with it. This is just a sign. Tear it off.