DONGGUAN Rail Transit Company, which is overseeing construction of the Dongguan Metro in Guangdong, China, has awarded CSR Nanjing Puzhen Rolling Stock Company a Yuan 860m ($US 135m) contract to supply 20 six-car metro trains. The new trains will be operated on the 37.7km first section of Line R2 of the metro, which is currently under construction and is due to open in 2015.