In addition, {HEAD ~ the method} of {TAIL ~ the invention} is simple and economical to implement in commercial manufacturing operations 
In addition , { HEAD ~ the method } of { TAIL ~ the invention } is simple and economical to implement in commercial manufacturing operations
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH