... Weight:0.84kg Size:270*130*25mm Stainless steel door lockModel:DM03012/DM03012S 1)Key specification Material:stainless ... Spot Welding,Laser Welding for Different materials.4.Assembling:assembly lines for complex product5.Heat Treatment:Include quenching, ... maching workshop,tooling making workshop,polishing workshop,hardware workshop,assembly workshop,power supply& machine maintain workshop,store and ...