{TAIL ~ Method} of making through hole with laser, copper clad laminate suitable for making hole, and auxiliary material for making {HEAD ~ hole} 
{ TAIL ~ Method } of making through hole with laser , copper clad laminate suitable for making hole , and auxiliary material for making { HEAD ~ hole }
TAIL TAIL TAIL TAIL TAIL 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