Investment Casting Material: carbon steel, alloy steel, stainless steel. Standard: ASTM, AISI, BS, DIN, JIS, NF Process: investment casting. Machining: turning , milling, drilling, grinding, threading, CNC machining, etc. Finishing: sand blasting, polishing,electro-polishing, plating, acid treatment,heat treatment, painting,machining,etc. Certificate: ISO 9001-2000 Main Product: machiney parts,marine hardware,building hardware,valve&pipe fittings,etc