... pharmaceutical, chemical industry, also suitable for manufacture potable wa reverse osmosis water treament advantage:1,the systerm occupy little space, easy ... sand, activated carbon, pp sediment membranes(precision filter) and reverse osmosis membranes, we can use Hydranuatic brand or Dow Filmtec ... . At the same time, we can install Ultra Violet(UV) and ozone machine on the machine for killing germs, ...