As a result, {HEAD ~ the manufacturing process} of {TAIL ~ the handle unit} is shortened so that the manufacturing cost is decreased 
of
As a result , { HEAD ~ the manufacturing process } of { TAIL ~ the handle unit } is shortened so that the manufacturing cost is decreased
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH