With more than ten years' history and experience, Tianjin OuNaiDa Transmissions Machinery Trading Co. Ltd. is specialized in manufacturing various kinds of standard and non-standard power transmission components, such as sprocket ,gear ,roller chain, gear rack, linear guideway ,ball screw , screw support and related products.



OuNaiDa owns advanced production equipments,first class technology and professional engineers.We can also produce according to our customers' drawings or requirements.



We adopts ISO, DIN, ANSI, BS standards. Most of our products are...