TongYu Transmission, a manufacturer of variable speed machinery, planetary gearboxes, gearbox repairs with advanced technology, is a tower of strength in the field of technique renovation. On design, TongYu adopts the three-dimensioned modeling and the finite element analysis, which has shortened the research circle of products, planetary gearboxes, gearbox repairs and guaranteed the reliability of the quality, can provide the transmission resolvable projects with special requirements for the customers much better. The company always promotes the quality improvement endlessly and pursues the target that the customers are satisfied with. It does upmost to meet or exceed the customers' expectation continually and manufactures the high quality products, planetary gearboxes, gearbox repairs.