1) when the material arrive the factory ,the QC deparmtent will check the thickness ,the surface ,the dimension of the material ,if the qualtiy is good ,then they will receive the material or else they will refuse the material ; during the production , all the department will check the quality ,just as the beam and upright ,the powder coating department will check the products before powder coating .
After produced ,the powder coating will check the surface and the thickness of the powder .
Also before loading container ,the loading department will check the products again .
2) for the QC control ,it is about 5% ,and there is First Article Inspection and last products inspection to sure the quality is good .
if you need other information please tell me .