We, ZHEJIANG AOZHAN INDUSTRIAL CO.; LTD ,China , are a factory involves in the Researching, Manufacturing & sales stainless steel Fastener . We are now the biggest factory for fasteners in China with the total area of 200000m2. 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.