... griding machine etc) (5)Various materials(stainless steel, aluminum, iron, steel alloy, copper etc) (6)Mature technology in inspection ... /dei steel/etc5.Other special materials:copper/bronze/iron/etcWe handle many other type of materials.Please ... materials are not listed above. Process technologyCasting, Machining, Metalworking, Sheet Metal Bending, Surface Treatment, Heat Treatment, Griding, Milling, ...