Shanghai dream Valley clutch Co., Ltd. is a collection development, production and sales of pneumatic clutch, pneumatic brake in one of the professional processing and manufacturing enterprises. The company has a number of highly qualified professional and technical R & D personnel, the use of advanced technology and equipment and scientific and efficient detection of a variety of means, as the production of quality and efficiency of the protection. The main products are: pneumatic clutch, pneumatic brakes, pneumatic brakes, safety chucks and other series products, the size of more than 2000 kinds of specifications.