1)bolts/non-standard 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)Material: iron, carbon steel, stainless steel, alloy steel, aluminum, cold rolled steel3)Surface treatment: kinds ...