The products of company is mainly in adapter sleeves, withdrawal sleeves and powerlock, which are belong to base parts of mechanism and are used widely in machine manufacture industry. Along with the high-speed development of the our country machine manufacturing industry, particularly the quick increment of the machine electricity product export, the demand of high quality bearing adapter sleeves and withdrawal sleeves are increasing continuously. For there is no factory to research and develop of high quality adapter sleeves, the high precision machine electricity product matched bearing adapter are mainly delayed by import. The import products is from Swiss SKF company, Japan NSK company, part of Taiwan and and Korean.