1.we are professional in producing this pumps for 25 years. 2. our products have CE certification. Materials:Impellers:AISI ... .0kgCHLF,CHLK Light Horizontal Multistage pump, CHLF,CHLK Light Horizontal Multistage pump products, Horizontal Pump,multistage pump,pump Horizontal multistage centrifugal pump,centrifugal pump,CHLF(T)4-40