1.:stainless steel,brass,aluminum,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 process.Materials: stainless steel ,carbon steel ,alloy steel, heat resistant steel ,tool steel ,brass and aluminum ,according to DIN ,EN, ASTM, BS, ...