... BS,DIN,JIS,NF 4.OEM service Technology:precision casting/investment casting; water glass; lost wax.Material:Carbon steel, ... system:ISO 9001:2008. inner control. 100% inspection for parts.Casting equipments: shot blasting machine,steam boiler,air compressor, ... ; OEM; Management: Total Quality Management, ERP, Advantages: Casting no internal shrinkage, external shrinkage defects; rich experience in ...