... used membrane gas pipeline filling oxygen produced by German Ott System Enngring Co. Ltd, Adopt integrated design, save area, investment ... save, low cost. With automatic control system..Process new, good effect, sludge less; it is convince to ... SS<30 NH3-N<15Application:1. Hotel, restraint, sanatorium and hospital.2. Residence community, village and town.3. Station, air port ...