... aluminum 3.ISO 9000 4.Standard: AISI, ASTM, DIN, GB, BS, JIS, NF, AAR Investment Casting of Suspension Parts ... Casting Process: Investment Casting , Sand Casting, Die Casting, Lost Wax Casting, Precision Casting, Gravity Casting ... Heat Treatment, Machine, Polishing, Chrome, Zinc, Nickel Plating 11.These parts are used in machine assembly, valve &pump parts, auto &motorcycle parts, train & railway parts ...