{HEAD ~ Another solder} resist {TAIL ~ layer} having an opening portion may then be formed on the exposed surface of the insulating layer 
resist
{ HEAD ~ Another solder } resist { TAIL ~ layer } having an opening portion may then be formed on the exposed surface of the insulating layer
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH