CERTIFICATION UNDER RULE 466

The Depositary, Citibank, N.A., represents and certifies the following:

      (1)   That it previously filed a registration statement on Form F-6
            (Registration Statement No. 333-143264) that the Commission declared
            effective, with terms of deposit identical to the terms of this
            Registration Statement.

      (2)   That its ability to designate the date and time of effectiveness
            under Rule 466 has not been suspended.

                                          Citibank, N.A., as Depositary


                                          By: /s/ Susan A. Lucanto
                                              ----------------------------------
                                          Name:  Susan A. Lucanto
                                          Title: Vice President