1. copper water impeller 2. 35 years casting experiences 3. CNC, all types of laths 4. OEM ... , brass casting, sand casting, die casting, gravity, high pressure die casting, low pressure die casting,copper foundry.2 ... , mirror polishing.5. OEM service available.6. Good quality and strict delivery time.7. If you have any ... will gladly to service you, our skype:donytrade High quality 3 inch water impeller