... parts, stretching,partsstamping part, machined parts, metal parts, 1.maetrial:3003 aluminum 2.finish:black anodizing drawing parts, stretching parts,stamping part ... bending, NC shearing, weldingMaterial: stainless steel, carbon steel, CRS, HRS, aluminum and brass, copper, etcSurface treatment: zinc/nickel/chrome plating, hot ...