1. copper water impeller 2. 35 years casting experiences 3. CNC, ... pressure die casting, low pressure die casting,copper foundry.2. Applied software for specification drawings: Pro/E, Auto ... blasting, heat treatment, painting, powder coating, anodizing, electroplating, mirror polishing.5. OEM service available.6. Good quality and ... service you, our skype:donytrade High quality 2 inch water impeller