As a kind of precision manufacturing equipment, hydraulic transmission device has become the core component of the global manufacturing industry and occupies a key position in the global high-end manufacturing industry. Equipment manufacturing industry is a strategic industry that provides technical equipment for all sectors of the national economy, is the main foundation of national defense construction and an important pillar of national economic development, and is an important embodiment of the national scientific and technological level and comprehensive national strength. Accelerating the development of equipment manufacturing industry is not only the basic requirement of adjusting economic structure and changing economic growth mode, but also the inevitable choice of enhancing China's comprehensive national strength.