Ningbo Zhenghai Yongding Fastner Co.,Ltd. specially produces fasteners, bolts etc. We have all kinds of automatic equipments of manufacturing and testing. Now the company is manufacturing various kinds of high quality bolts, nuts and non-standard fasteners. The products meet all the international criterion of GB, DIN, ISO, ANSI,AS, BS. The products are widely used in numerous domestic enterprises and national key construction projects and exported to European, American and Southeast Asian markets. Welcome to contact us. We developed trade with you by our high quality products for mutual benefit and mutual development.