Founded in 1989, Ruian Jiulong Fasteners Factory is specialize in clutch repair parts and high quality fasteners. 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%. 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. Besides standards fasteners according to GB, DIN, ISO, ANSI, JIS, etc, we can also manufacture prototype design fasteners according to customers requirement.