Ningbo Yongtong Tool Factory, founded in 1988, is located in National zoology county, Huangtan industrial zone Ninghai county Ningbo city. The factory is close to Yonglin line 4 kilometers far away from Ninghai general passenger transport station. It is an important manufacturer of domestic special type screw. The mainly products are automatic screw, impulsive screw, inferring-electricity screw, auto maintenance tools, motorcycle repair tools, bit mouth etc six large series high-quality hardware tools. These products are popular with domestic market, and it is sold to all over the world by way of trade company.