Alloy steel precision casting/investment casting 1.ISO 9001 2.Strict QC 3.Standard:ASTM,AISI,BS,DIN,JIS,NF 4.OEM ... a professional manufacture of water glass precision castings ,including carbon , alloy and stainless steel .We cast especially large parts as per ... Technology:precision casting; investment casting; water glass; lost wax2 Standards:ASTM, AISI, BS, DIN, JIS, NF3 weight range :0.1KG- ...