After having inserted therein the insulating gas 16, {HEAD ~ the complete assembly} would then be tested to {TAIL ~ purchaser specifications} at the manufacturing facility 
tested to
After having inserted therein the insulating gas 16 , { HEAD ~ the complete assembly } would then be tested to { TAIL ~ purchaser specifications } at the manufacturing facility
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH