Original: In June 2000, MTRCL proceeded with its plans to retrofit 2,960 pairs of platform screen doors at all 30 underground stations on the Kwun Tong Line, Tsuen Wan Line, and Island Line in a six year programme.
Simplified: In June 2000, The MTR Corporation proceeded with its plans to retrofit 2,960 pairs of platform screen doors at all 30 underground stations on the Kwun Tong Line, Tsuen Wan Line, and Island Line in a six year programme.