... machining, polishing, and plating5. All sorts of precision casting parts: marine casting parts, auto parts, machinary casting parts, pump parts, hardware parts6.OEM are welcomed. PROCESSMATERIALSTANDARDSAND CASTINGGreen SandGrey ... Silicone(Water Glass)Stainless Steel, Carbon Steel, Special Alloy Steel, Bronze, Brass, AluminiumSilica SolFORGINGHammer ForgingStainless Steel, Carbon Steel, Alloy Steel, ...