Boss Precision Works Co.,Ltd is certified with ISO-9001:2008 and specia lizing in the supply of various fasteners including Drywall screw, Self Drilli ng Screw, Tapping Screw, and Chipboard Screw. Also, we can customiz e drawing and new design per request. With in-house QC Lab, fastener s quality is assured. Set up in 1994, Boss Precision Works Co.,Ltd is certified with ISO-9001:2008 and specializing in the supply of various fasteners including Drywall screw, Self Drilling Screw, Window Screw, Tapping Screw, and Chipboar d Screw. Also, we can customize drawing and new design per request. A t the same time, with in-house QC Lab, fastener’s quality is assured.