Features: 1.This machine has oppose-direction washing device, don??t need to extra equipment with . oppose-direction washing pump 2.It can supply water to user directly, don??t need to equipment with second-class pump and reduce second pollution 3.it has remove sand unit by itself. 4. It has long period of filter, remove Fe and Mn completely. Main Technical parameters: 1.Original water content of Fe : 5~20mg/L, Content of Mn: 1-9mg/L?? 2.water content of Fe after Filter

