... ,alloy,iron etc. 2. Precision Casting,lox wax casting,investment casting 3.OEM Precision Casting,lox wax casting Casting: investment casting ,precision casting, lost wax casting ,soluble glass process complex shell ... large series.Process: cast, machining, turning, milling, drilling, thread cutting.Surface treatment: glass rays electrolytic polishing, coating, varnishing, bromzing. Passivating ...