In one aspect, the present invention is directed to {HEAD ~ a method} of manufacturing {TAIL ~ a PCB} 
In one aspect , the present invention is directed to { HEAD ~ a method } of manufacturing { TAIL ~ a PCB }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL