The storage tank may be an independent unit relative to {TAIL ~ the apparatus} for {HEAD ~ the ozonated water production} 
The storage tank may be an independent unit relative to { TAIL ~ the apparatus } for { HEAD ~ the ozonated water production }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD