the reverse osmosis device is an equipment to purify the saline water with the action of pressure difference of semi permeable membrance. it is called reverse osmosis, as it is counter to natural penetration direction. different materials have different somotic pressure. the reverse osmosis method to adopt larger osmotic pressures is used to obtain the purpose to seperate, extract, purify and condense.

more than 97% aoluble salts and 99% glues, microbe, particulate and organic substances and etc. can be removed with the reverse osmosis. it becomes the most ideal equipment for the modern program of pure water, hyper pure water, and airspace water. the remarkable characteristics of the equipment are shown as lower energe consumption, no pollution, simple technics, high water quality, easy operation and maintenance.