O shape circle product introduction
　Forming a leading metal stamping technology, complete sets of production equipment, unique rubber formulation process, years of production experience, a high degree of anti-deformation of the structure of production and to adapt to dynamic string axis deviation, and a variety of materials characterized by the integration of the oil seal, applicatied in Mack, MERCEDES， DAF, VOLVO, MAN Kenworth, , Ford, , Eaton, , Gmc， DACIA CUMMINS，MITSUBISHI， NISSAN， ISUZU， IVECO and different trailers, heavy-duty vehicles, project machinery vehicles.