founded in 1958 in Hubei Tri-ring metalforming equipment co., Ltd. (formerly Yellowstone forging machine tool plant) was awarded the "vanguard of Chinese metal forming machine tool manufacturing industry enterprise", after 50 years of innovation and development, gradually grew into the world's advanced research capacity and modernization of manufacturing enterprises. 1860 were employees in the company, of which 212 are engineering technicians, senior technical experts, more than 30 people, postdoctoral industrial base in Hubei Province, with an annual output of 1500 sets development of precision CNC forging machine tool base, company products won "China famous brand products", "first prize of China machinery industry science and technology", "second prize of national scientific and technological progress", a series of honorary titles.

main production CNC bending machines, number controlled turret punch press, laser cutting machine, CNC cold heading machine, Decoiling cutting machines, precision forging, frame bending machine, high energy screw press, automatic cold header, Uncoiling and leveling line , and large longitudinal seam tube forming equipment and mine 11 categories such as removable capsule more than 200 kinds of specifications of metal forming equipment. products sold at home and abroad markets, widely used in energy, piping, steel construction, communications, electric power, ships, automobiles, aerospace, military, transportation, mining and other fields.