The stainless steel-bodied Type B trains are equipped with remote diagnostics system which allows depot staff to wirelessly download data on the performance of components.
Trial operations are due to start on the initial 22.4km 16-station phase of the east-west line next June and full commercial services are due to start by the end of 2015.
Chengdu opened its first metro line in 2010 and the municipal government plans to develop a 384km 10-line network by 2020.
