About us 　Our company, authorized by the State Bureau of Machinery Industry, is a specialized manufacturer producing standard fastening parts.With abundant resources, advanced processing technology for testing and inspection as well as complete set of facilities, our products, hexagon socket head screw/collar head screw ranging from M5-M16, are all made of top grade medium carbon steel and alloy steel with 8.8-10.9 intensive degree. Products for export are produced according to DIN, BS/ANS1 standard. While for domestic market, they conform to GB standard. Meanwhile, we also contract those projects of non-standard parts/molds of standard part,from designing to manufacturing. 　We believe that Quality is the life of our enterprise. It` s our motto to honor contract and abide by our words. Our products sell well both in overseas and domestic market. Please feel free to contact us, either in person or through phones. 　 　 Quality control 　 　 certificate of imports and exports 　 Hai yan Fastners Factory Add：No.33 ChangQing GanPu HaiYan Manager：Xu Guo Xun Tel：0573—86513188 Fax：0573—86511248 Pc：314302 E—mail：yongjin@mail.jxptt.zj.cn www.hyff.com