... Fasteners 3. Customer First,Service Fi 2013 Largest Of Sale Drywall Screw • Material: Carbon steel & stainless steel• Head ... , ANSI, JIS, BS, Non-standardSurface :Galvanized (Various of color), dacromet, blackened, phosphatingCertificationISO/TS16949,ISO9001,GJB9001B - 2009Professional ... in fastener products 25 years of experience in this fieldService:All the services/High quality servicePacking :Boxs ...