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