Jiaxing Yutong Technology Co., Ltd. is professional China Square Bolt factory and Square Bolt wholesaler. We are committed to the production of thread, nut, bolt, and gasket. These standards include Chinese GB standard, international ISO standard, German Din Standard, American Ansi Standard, British BS standard and so on, the main raw materials used are carbon steel, product grades are Grade4.8,8.8 and 10.9. We also OEM/ODM Square Bolt. Widely used in many trains, automobiles, forklifts and construction machinery. We have paseed ISO9001:2015. 10 of Fortune 500 companies are our customer.