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