Reverse osmosis is 60 s developed A high new membrane separation technology, its aperture is small, mostly > (10 years), it can remove belong to the scope and the molecular weight of the small ion organic matter, such as bacteria, viruses, heat source, etc. It has been widely used in water or md desalination, electronics, medicine with pure water, drinking water, the production of steam bottled water, also used in biology, medicine engineering. I company produces the reverse osmosis device, the composite film to import components is given priority to, complementary with multistage centrifugal pump, stainless steel high pressure pipe, valve, instrument, electrical control system etc.