... trade integrationMain ProductsWood Screw, Drywall Screw, Chipboard Screw, Machine Screw, Deck Screw, Self Tapping Screw, Self Drilling ... J23-16,Milling machine COYO/ALSGS & CY-L-90,Continuous hot wind tempering furnace Sanli & RJC210,Grinder machine DA SHUANG ... YANG & M230-2, Lathe machine C6233,Wire cutting machine Deren & DK7740 etc.Testing ...