... % factory price/ 2.Developed quality control system/ 3.OEM accepted/ bearing pump MATERIAL OF PUMP CasingCast IronImpellerStainless steelCasing ringhardened S.S, ... supply equipment in any possible places Features1The motor and the pump united as one, working under water, more reliable.2No ... install, operate and maintain, less space demand, no pump house needed4Simple structure, less cost, Submersible