Founded in 1989, Ruian Jiulong enjoys an outstanding reputation of 19 years as a reliable manufacturer of standard and non-standard fasteners. We manufacture according to DIN standards, as well as customer-specific solutions based on blueprints or samples. Our capabilities consist of turning, threading, milling, froging,stamping and grinding. With these capabilities we are able to produce many kinds of fasteners. The products with the brand --DIZEN includes: KM locknut, conical seat, spherical washer, slotted spanner nut, parallel keys, spring pin and some clutch repair parts. In all these years, we always believe --there is a quality product, there is a market.To carry out the company faith, we have built a strict inspection department which makes the qualification rate up to 99%. For the most important part, the focus of our efforts is to let our customers have a maximum of quality and service. Because only "the customers whose expectations we overtop ...[More] come back." Please be free to contact us!