[4] They are built by Adtranz, Siemens Mobility and CSR Zhuzhou Locomotive, with modified by Shentong Metro between 2023 and 2024.

[6] Every carriage's lampshades were changed from grids to white plastic boards during the second general overhaul.

Like the DC01, The initial contract for Line1 and Line 2 was designed as 6-cars sets, for the lower expected ridership in 1990s and 2000s.

[6] The second contract for CSR Zhuzhou Locomotive included 72 cars for expanding the remaining 12 trains.

In 2011, they were stripped for removing parts and stored in the maintenance shop of Meilong Depot.

[11] On July 15, 2018, set 133 was pulled out of service at North Zhongshan Road station due to the fault.

[12] Eventually, This set required an extensive repair and returned to service almost three years later on July 28, 2021.