This invention relates to {HEAD ~ a drilling screw and execution method} for fixing a gypsum board to a thin steel plate by utilizing {TAIL ~ this drilling} screw 
This invention relates to { HEAD ~ a drilling screw and execution method } for fixing a gypsum board to a thin steel plate by utilizing { TAIL ~ this drilling } screw
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH