MTR > Depots - 港铁 The Kwun Tong Line, Tsuen Wan Line, Island Line and Tseung Kwan O Line are supported by their respective maintenance depots at Kowloon Bay, Tsuen Wan, Chai Wan, and Tseung Kwan O. Each provides a base for the 1,500 volt DC electric multiple unit (EMU) trains operating on the line they serve. https://www.mtr.com.hk/en/corporate/operations/detail_depots.html - 2025-07-11