Stainless steel drilling screws

This is suitable for stainless steel, metal steel, galvanized steel, engineering, installation, metal curtain wall light compartment, and other indoor and outdoor installation, general angle, channel, iron and other metals combined with installation, car trunks, containers, shipbuilding industry, refrigeration equipment and other assembly work. Features of this product: drilling and tapping, locking once completed, with strong, saving construction time, improve efficiency, manufacturing and quality assurance.