... bolts/bolts for autos 2)high precision 3)quality be assured 4)competitive price and service 1)Equipment:stamping machines,Hydraulic ... press machines,Auto-Turning machines,bending machines,stamping equipment for carbon dioxide gas arc welding and argon-arc welding 2 ... Powder, Anodizing, E-coating, Silkscreen, Heat treatment, Black oxid standard metal stamping stamped nut bolts for autos