Workers measure and process a component for a gear box at a factory of Taiyuan Heavy Machinery Group (TZ), June 26. A gear box workshop of the company was put into production on the same day, meaning that now Taiyuan Heavy Machinery Group has the capability to produce the key components of rail transport. The workshop has four processing units for gears, gear shafts, spiral bevel gears and gear boxes, as well as one heat treatment production line, one assembly line and a testing line. [Photo/Xinhua]