... , Stainless Steel( 304/303), Aluminum (6061-T6, 707-T6, 2024); Copper; Brass; Aluminum etc.Surface TreatmentHeat treatment;plating (Zinc, Nickel,Chrome,Aluminum ... FormatsSTP,CAD,STL,IGS(2D or 3D file)Preferred IndustriesAccessiories of model cars, glasses, toys, clocks, watches, lights, military products, electric ... . feel free to contact with me for further information. precision copper parts