... etc.The products' information as follow:NO. 1---Material: Casting steel, alloy steel, carbon steel, stainless steel, grey iron ... 3---Trademark: JGQNO. 4---Process: Investment casting, mirror polishing, sand casting, water glass casting, etc.NO. 5---Business Scope: North ... Stainless steel, Grey iron, 3 Process Investment casting, Sand casting, Lost wax casting, Mirror polishing 4 Standard GB/ASTM/ANSI/ ...