custom die casting aluminum impeller 1.Material:Metal(SS,Aluminum) 2.Precision CNC Turning,Drilling,Boring,Milling stainless steel ... CNC machining, Swiss Automatic turning, stamping, Die-casting, milling, grinding,cutting, welding and other services. The line of production: valves, construction ... .PP,PE,ABS,PET,PVC custom stainless steel impeller/Turbine Wheel