... , Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxide) custom to customer's request.Making Process:Stamping: Rolling, forming, punching ... ruler, Depth ruler, Outside ruler, etc.1 Technicians self-check in production2 Engineer spot check in production3 QC professionals ... Stamping Part:Welcome to our Factory:Packing Dtails :Certificate New design 30K BTU air conditioner wall mount