According to relevant estimates, by 2010, the annual demand for large and medium-sized horsepower tractors will reach about 100000, and the number of combine harvesters will be 50000. In addition, the ownership of various agricultural machinery is also increasing. It is estimated that by 2010, the number of medium and medium-sized horsepower tractors will reach about 1.3 million, and the number of combine harvesters will reach about 400000. Bearing products for agricultural machinery OEM matching accounted for a large proportion. Therefore, the market demand of hydraulic and pneumatic seals for agricultural machinery matching and maintenance will be greatly increased. Agricultural machinery products need a large number of cylindrical roller bearings, ball bearings, needle bearings and so on.