The trains will be used on the 41.5km north-south Line 4 which is due to partially open next year, with complete delivery of the 40 vehicles set to take place by 2016. The contract for traction equipment is worth more than $US 55.8m, with the equipment set to be supplied from the companies' factory in Suzhou which opened in 2010.

Line 4 will be Suzhou's third metro line following the 25.7km east-west Line 1, which opened in April 2012, and the 26.5km north-south Line 2, which opened on December 28 2013.

• CSR Sifang Quingdao recently launched the prototype 15T For City LRV which it is building under a 10-year license from Škoda to sell in the domestic Chinese market.