... stainless steel 4.+/_0.05mm Most of thehigh precision sheet metal partsare used in motorcycle,instruments,meters etc. ... 5)Various materials(stainless steel, aluminum, iron, steel alloy, copper etc) (6)Mature technology in inspection (7)5000 pcs ... materials are not listed above. Process technologyCasting, Machining, Metalworking, Sheet Metal Bending, Surface Treatment, Heat Treatment, Griding, Milling, ...