1,factory based 2,professional technicist 3,strict quality control 4,oem are welcomed Specification: Product: forged gear and shaft China manufactory Material: carbon ... , specilized in offering forged products, such as forged shaft, impeller, gear, ring, rotor, flange,cylinder, sleeve, drill collar, drill pipe, ... the world to visit our factory, look forward to cooperate with your esteem company.