Hua-Ching is a professional fastener manufacturer who produces fasteners, trades with well-organized sourcing system, and also owns a packing factory where it does all kinds of packing by its own. Hua-Ching mainly focus on screws, bolts, drill bits, anchors and other tools like chisels, saws, hole saws and so on. We are able to provide PGM certified hammer drill bits and masonry drill bits also BOSCH warrants SDS Plus logo for hammer drill bits.