It is estimated that the annual demand for large and medium horsepower tractors is about 100,000 units, the combine is 50,000 units, and the ownership of various types of agricultural machinery is also increasing, the ownership of large and medium horsepower tractors is about 1.3 million units, and the combine is about 400,000 units. Bearing products for agricultural machinery OEM supporting accounted for a large proportion. Therefore, the market demand for hydraulic pneumatic seals for agricultural machinery and maintenance will have great growth. Agricultural machinery products require a large number of cylindrical roller bearings, ball bearings, needle bearings and so on.