Jiangyin Zhenlong Standard Parts Factory established in 2001, adhering to the principle of “high quality, great service and reasonable price” ,we has got good reputation from our customers. We are serving to the shipyards and fastener application manufacturers all over the country. Our products are exported to the Middle East, Spain, India, England, Russia, USA, etc. We are specialize in producing GB、DIN、UNC/UNF、ANSI、JIS and other standard fasteners. Main product: all kinds of bolts such as hex bolts, automotive bolts and moto bolts; spring. Product grade:4.8, 8.8, 10.9. Surface treatment: black, zinc white and blue, heat dip zinc.