1. We can meet standard GB/T, DIN, ISO, ASTM. 2. Materials: Carbon, stainless steel and alloy steel. 1. We can meet standard GB/T, DIN, ISO, ASTM.2. Materials: Carbon, stainless steel and alloy steel.3. Certification: ISO9001: 20004. Excellent Quality Control, Good Price. Fast Delivery!5. Could supply casting parts per customer drawing & specification!