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