... impeller 2. 35 years casting experiences 3. CNC, all types of laths 4. OEM 5.ISO9001,export entitlement water impeller1. Copper casting, brass casting ... , sand casting, die casting, gravity, high pressure die casting, low pressure die casting, ... copper foundry.2. Applied software for specification drawings: Pro/E, Auto CAD, Solidwork, CAXA UG, CAD/CAM/CAE.3. Precision ...