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