Advanced membrane uses technologies of {HEAD ~ reverse osmosis} and nanofiltration systems while {TAIL ~ resin technology} uses ion exchange systems 
Advanced membrane uses technologies of { HEAD ~ reverse osmosis } and nanofiltration systems while { TAIL ~ resin technology } uses ion exchange systems
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH