Shandong Ouya Wantong Marine Engineering Co., LTD. our factory is a collection of ship shaft, rudder system of complete sets of equipment research and development, production and sales as one of the new technology enterprises, our factory began in 1992, The main production is ship shafting and rudder system engineering of complete sets of equipment marine propulsion system, rudder, the ship set of sealing engineering, polymer nano composite bearing and material.