gear lost wax casting precision casting parts OEM service ISO9001-2000 1. Material: various from ... brass, zinc, etc.2. Casting and machining process: investment casting, silica solution casting, lost wax casting, die casting, sand casting, power casting, forging, surface treatment, hot ... ISO 9001-2000 certificate assure high quality products available for our customers. 5. Product type: fan wheels, ...