We, ZHEJIANG AOZHAN INDUSTRIAL CO.,LTD ,China , are a manufacturer involves in the Researching, Manufacturing & sales stainless steel A2 & A4 Fastener . We are now the biggest factory for fasteners in China with the total area of 200000sqm. The first class production technology and professional design have privilege us high reputation; strict quality control measures and advanced machines assured highly quality. Our material adopts domestic and international high-quality SUS304 SUS316 top-grade line material. Our products include hexagon nuts, hexagon socket set screws , hexagon bolts , wing nuts Germany form , split cotter pins, tapping screws, woods screws, rivets, washers, studs welding and so on, carried out standard such as GB, DIN, ISO, JIS, ANSI/ASME, ect. Our total producing ability is about 42000 ton every year.