alloy steel investment casting 1, high chrome 2,precision casting 3,long durability 4,OEM, CE, ISO9001 alloy steel investment castingCE, ISO9001 ... Standardization Technology Committee Unit. And the company takes part in and sets down the national standard Parabolic ... and offer the ideal key equipments to casting, forging and heat treatment, steel structure, container, machinery, shipbuilding, aircraft, ...