Chengdu metrorail train set unveiled August 27, 2014 | Asia Pacific News China-based CNR Changchun Railway Vehicles (CNR) has unveiled the first six-car train set for Line 4 of the Chengdu metro system. The company is supplying 27 train sets for Line 4 and 24 for Line 3, a... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password