QINGDAO, Jan. 11 (Xinhua) -- A carbon fiber metro train, dubbed CETROVO 1.0, began passenger service on Friday in the port city of Qingdao in east China's Shandong Province.
The new bidirectional power supplies of series EA-PSB 10000 offer much power in a small space: 30 kW in only 4 units of height (4U). Compared to series EA-PSB 9000 3U it saves a space of 2U or one ...