... DIN,JIS,NF 4.OEM service Technology:precision casting/investment casting; water glass; lost wax.Material:Carbon steel, ... vibrating casting machine,arc welding machine, wax injection machine,spraying sand machine,etc; Machining equipments: drilling machine,vertical ... OEM; Management: Total Quality Management, ERP, Advantages: Casting no internal shrinkage, external shrinkage defects; rich experience in ...