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