Zhejiang Ruifeng Drill northern Shanxi folder under the Electrical Manufacturing Co Ltd, relying on the strength of the large state-owned military industrial enterprises, is specialized in developing, manufacturing power tool drill chuck of the joint-stock enterprises. 
 Our main products are stingy type, wrenches and self-tightening drill chuck. With the international advanced level of professional processing equipment, complete and perfect production line and testing equipment, advanced Solidworks, Pro / E, AUTOCAD and other design software, according to customer requests for product design of various drill clip and the production, manufacture, and drill chuck to provide highly reliable self-locking scheme. 
 Strong research and development company, with reliable equipment and management system research prototype, a senior engineer with 22 researchers, 76 engineers, 415 engineers. Diamond has developed a strong brand folder "Feng". 
 Our company is "the pursuit of excellence, creating fine" for the concept of product quality as the fundamental enterprise development. With a strong technological advantage and reliable quality assurance, product renowned at home and abroad. We sincerely welcome all the business contacts and technical exchanges, and look forward to working with you to create brilliant!