机械部信息，部分四轮农用车零部件将实行合格证制度。为解决农用运输车零部件生产存在的问题，机械工业部1997年将首先对四轮农用运输车的前桥、后桥、悬架、转向器、制动主缸、轮缸五类产品，实行合格证制度。我国农用运输车的发展，培育起一批零部件企业。但零部件工业存在 Ministry of Machinery Information, part of the four-wheeled agricultural vehicle parts will implement the certificate system. In order to solve the problems existing in the production of spare parts for agricultural vehicles, the Ministry of Machinery Industry will implement the five types of products including front axles, rear axles, suspensions, steering gears, brake master cylinders and wheel cylinders of four-wheeled agricultural vehicles in 1997. Certificate system. The development of agricultural trucks in China has fostered a number of parts and components companies. But the parts industry exists