High Quality Hex Head Self Drilling Screws white zinc plated carton packing

      SHIMAI can manufacture various standard screws, such as self drilling screws, self-tapping screws, dry wall screws, chipboard screws and wood screws. We can manufacture screws of various head types and groove shapes. We are also providing various surface treatment , including white galvanized, blue galvanized, yellow galvanized, black galvanized, black/gray phosphating, nickel plating, DacroMat, Magni and so on. We can process carbon steel and stainless steel. And we can product screws as customer's requirement.