Alloy steel precision casting/investment casting 1.ISO 9001 2.Strict QC 3.Standard ... BS,DIN,JIS,NF 4.OEM service Technology:precision casting/investment casting; investment casting; water glass; lost wax;Material:Carbon steel, ... spectrometer, etc.Service: processing with supplied drawings; OEM; Management: Total Quality Management, ERP, Advantages: Casting no internal shrinkage, external shrinkage ...