Dental Materials, Dental Lab Materials, Dental Laboratory Equipment manufacturer / supplier in China, offering #8 X 1-1/4" Black Phosphate Plasterboard Fixings Drywall Screws Coarse Thread, #8 X 2 Inch Black Coarse Thread Phillips Drive Drywall Wood Screws, #6 X 1" 3.5X25mm Black Phillips Bugle Fine Thread Drywall Screws Manufacturer and so on.