Zhejiang Zhoushan Zhengyuan Standard Parts Co.,Ltd is a professional manufacturer of standard parts and a legal entity approved by the state for operating import and export business.Situated in Shenjiamen Marine Biota Industrial Park in Putuo District,Zhoushan,Zhejiang Province,China,Zhengyuan owns fixed assets of 120 million yuan and registered capital 36 million yuan.It covers a land of 23,000 square meters.Its annual production capacity is 26,000 tons.Presently,the company employs 260 people,among whom more than 80 people have intermediate or senior professional title.Favorably located in the biggest fishing port in China-Shenjiamen Port,the company faces the Buddhist Sacred Land Mt.Putuo and Mt.Yandang on the Sea Zhujiajian Scenic Spot across the sea.It lies in a convenient transport net work of sea,land and air and enjoys beautiful island scenery and agreeable climate.

      The company has become committee Member of China National Technical Committee for Standardization of Fastener,committee Member of China National Technical Committee for Standardization of Pipeline Accessorise,member of Wind-Power Machinery Subcommittee of China Association of Agricultural Machinery Manufacturers,group members of China Steel Construction Society,council member of China Heat Treatment Industry Association,standing committee member of Fastener Professional Committee of National Federation of Industry and Commerce Hardware Machinery and Electric Appliance Professional Committee,council member of China General Machine Components Industry Association, Research and Develop Base of China National Quality Supervision and Test Center for Standard Parts of Ships,The Recommend Products of Piping Design Technical Center of China Petrochemical Corporation,Standard and Assigned Products of Piping Design Technical Center of National Chemical Process,Committee Member of Zhejiang Technical Committee for Standardization of Fastener,the first "Green Enterprise"of Zhoushan.

      The company specializes in producing cold and hot stamped hex nuts and bolts, stainless steel nuts and bolts,and various kinds of nonstandard shaped parts and locknuts (bolts, studs, washers and riggings) etc, covering GB national standard,ISO international standard, ANSI American system, JIS Japanese system, DIN German system,BS British system, UNI Italian system, AS Australian system, CNS Taiwan system, SH (petrochemical) standard, HG (chemical) standard and automobile standard. The product specification ranges between M3-M200, 1/2"-5 ″.The grade of nuts is from Grade 8 to Grade 12,while the grade of bolts is from Grade 8.8 to Grade 12.9. The surface of the products are processed by hot dipping,electroplate, Dacromet, fluorine PTEE, spray-on coating etc, with materials mainly adopting stainless steel 304, 316、316Ti、2205、1.4507、660、TX190; alloy steelSCM435、SCM440、 20MnTiB, 35VB, 35CrMo, 42CrMo, 40CrNiMo, 40Cr, B7, B16, L7, and carbon steel 45 ＃ , 35 ＃ , 20#, A3.Company's leading product is suitable for application in the industry of : 1.Wind Power Machine; 2. High-speed Train Bridge; 3. Petroleum, Petrochemical and Electric Power; 4. Aircraft Gas Turbine; 5. Ships and Railway; 6. Nuclear and Ordnance etc. While occupying a nationwide sales network, they are also exported to the North America,Europe, Japan, Southeast Asian countries and Taiwan area.
Zhengyuan has been engaged in manufacturing standard parts for about 40 years，led by five domestic
advanced production lines, which are hot forging nut production line, hot forging bolt production line，cold heading production line, gear rack production line and heat treatment production line, and three centers, which are Zhengyuan Technical Center, Employees Training Center, CNC machine center. It possesses strong technical force,excellent equipment and fine workmanship. The Physical & Chemical Measuring and Testing Center subordinate to the technology center owns a complete set of late-model and perfect testing equipment mainly used for a series of technical inspections such as chemical analysis of materials, metallographic test, mechanical property test, physical property test, no defect test, anticorrosion property test and measuring tool test.

      The company carries out scientific research to control and improve the product quality. Perfect quality assurance system and strict management system keeping pace with strong productive force and advanced testing means have built Zhengyuan's success today. The company has also been registered with ISO9001 system and gained the titles of "Green Enterprise"and "Well-known trademarks"of Zhejiang. All the brand strategy brings Zhengyuan market recognition. At the same time, by using internet to open up international market, the company has established a web station under its name (http://www.zszyss.com), which has laid a firm ground for the company to grow into the largest production base nuts and bolts in the country.

Your wish is the pursuit of Zhengyuan. Zhengyuan aims to bring you mire success and further progress.Looking into the future, it will accelerate its steps of reform of innovation, carry forward the corporate spirit of faith, innovation, struggle and upgrade based on the tenet of quality first and users uppermost and sincerely serve the numerous clients with first-rate quality, first-rate service and reasonable price. Once met in business, we will become friends forever. Mr. Lin Zhongyue, board chairman and general manager of the company, will join hands with friends from various circles for a brand new cause and mutual success. Furthermore, he commits himself to the development of standard parts industry and strengthens the exchange and cooperation with clients in every part of the world to achieve the goal of becoming an international renowned enterprise.