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    BS EN 1917 & BS 5911-3

    Doran (Hong Kong) Ltd.
    Flat/RM 912, 9/F
    Skyline Tower
    Kowloon Bay
    39 Wang Kwong Road
    Hong Kong
    BSI logo

    Certificate Number: KM 06894
    Scope: Concrete manholes and inspection chambers

    Original Registration Date Effective Date Last Revision Date Expiry Date
    1989-12-01 2025-05-16 2025-05-16 2025-11-10