Next, the ends of the heat pipe are compressed via the extruding shaft to render the end surface of {HEAD ~ the heat pipe} depressed from outside to {TAIL ~ inside} 
depressed to
Next , the ends of the heat pipe are compressed via the extruding shaft to render the end surface of { HEAD ~ the heat pipe } depressed from outside to { TAIL ~ inside }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH REL TAIL TAIL TAIL TAIL TAIL