Reverseosmosis device is a water machine to purify the saline water ... difference of semi permeable 1. RO series reverse osmosis device is water machine to purify the saline water with the ... osmotic pressures is used to obtain the purpose to separate, extract, purify and condense. 2. More than 97% soluble salts ... , high water quality, easy operation and maintenance. Reverse Osmosis Device,water machine