Through {TAIL ~ the savings} of electrical control valves, the electronic outlay in {HEAD ~ the control apparatus} is also reduced, and the energy consumption is lowered 
Through { TAIL ~ the savings } of electrical control valves , the electronic outlay in { HEAD ~ the control apparatus } is also reduced , and the energy consumption is lowered
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH