I refer to the letter from Barry Kwok of Cheung Sha Wan, which appeared in the South China Morning Post, on April 8. I can assure Mr Kwok that the MTR Corporation does regularly check its ventilation system and clean the dust filters of the central air-conditioning system. If Mr Kwok would like to have any more information about the maintenance and cleaning required for this plant, he is welcome to contact me on on telephone number 2993 2175. MIRANDA LEUNG Corporate Relations Manager MTR Corporation
