... partsMaterials: Stainless steel, carbon steel, spring steel, aluminum and brassProcess: Laser cutting, die stamping, CNC punching, , ... machine, hydraulic bending machine, hydraulic shearer, welding machine and test facilitySurface finishes: Zinc/nickel/chrome plating, hot galvanized ... such as metal washers, big-size screws, bolts, nuts, and other metal parts, according to supplied drawings or samples ...