... parts OEM service parts/investment casting/sand casting/ CNC machining DescriptionCNC machining process with sand castingMaterial Cast iron, grey iron, ductile iron ... ,aluminumCertificationStandardISO9001:2008ASTM,JIS,GB,AISI,DIN,etcSurface TreatmentZinc,heat-treatment,powder,nickel,chrome,sliver,polishing,T4,T6,etcEquipmentsPressing machine,Wire-electrode ...