However, according to the present invention, by virtue of the grooves formed at {TAIL ~ the side flash} by laser irradiation, it is possible to easily remove the side flash and to improve deflashing efficiency and quality of {HEAD ~ products} 
However , according to the present invention , by virtue of the grooves formed at { TAIL ~ the side flash } by laser irradiation , it is possible to easily remove the side flash and to improve deflashing efficiency and quality of { HEAD ~ products }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL 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 OTH HEAD HEAD HEAD HEAD HEAD