In addition, water from the pool is subjected to dust removal through the filter and then introduced into the sterilizing chamber wherein {HEAD ~ the water} is sterilized and deodorized by {TAIL ~ the ozone bubbles} 
is deodorized by
In addition , water from the pool is subjected to dust removal through the filter and then introduced into the sterilizing chamber wherein { HEAD ~ the water } is sterilized and deodorized by { TAIL ~ the ozone bubbles }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL