Located in hi-tech development district of Chongqing, Chongqing Tongsheng Electrical＆Mechanical Research Institute(Chongqing Tongsheng Electrical＆Mechanical Research Institute) is a hi-tech enterprise and professional in research, design and production of industrial equipment; one of cooperative company of state operating oil standard and qualified enterprise of ISO9001-2000 standard; The only company provided manufacturing license of anti-explosion oil-filtering machine; The exclusive authorized company of advanced company in the counterparts of state technological inspection bureau of China. We hammer away to research and development of oil-filtering machine. Introduced overseas advanced technology, the technology of vacuum oil-filtering machine is far ahead and provided national patent. Various equipments are produced according to the standards of......