... beginning of 1980s’ after we introduced gear designing and making technology from American Philadelphia Gear Co. The successful development ... power generating, national defense, paper making, sugar making, and oxygen generating applications. A lot of gearboxes of this ... 280mm, 310mm, 345mm, 390mm, 430mm, 485mm, 530mm, 580mm and 650mm respectively. MHS (medium high speed) series high speed gearboxes ...