[USIP O C 13G Page 1 of 15 Joint Filing Agreement March This Agreement may be executed in multiple counterparts, each of which shall constitute an original, one and the same instrument. Commonwealth Bank of Australia John Damien Hatton Company Secretary Colonial Holding Company Limited John Damien Hatton Director Commonwealth Insurance Holdings Limited John Damien Hatton Director Colonial First State] [USIP O C 13G Page 1 of 15 Item 7 Information The securities being reported on by the reporting persons herein as parent holding companies are owned, or may be deemed to be beneficially owned as follows: Company Type of Company. First State Investments (Hong Kong) Limited IA (HK registered) First State Investments International Ltd. IA (US registered) First State]

[USIP O C 13G Page 2 of 15 1. NAME OF REPORTING PERSON S.S. OR I.R.S. IDENTIFICATION NO. OFOVE PERSONmmonwealth Bank of Australia * 2. CHECK THE APPROPRIATE BOX IF A MEMBER OF A (a) 3. SEC USE ONLY 4. CITIZENSHIP OR PLACE OF ORGANIZATION Australianpital Territory] [USIP O C 13G Page 1 of 15 Joint Filingreement March STYLE="font-family:Times New Roman" SIZE="2"> Thisreement may be executed in multipleunterparts, each of which shallnstitute an original, one and theme instrument.mmonwealth Bank of Australia Johnmien Hattonmpany Secretarylonialmpany Limited Johnmien Hatton] [USIP O C 13G Page 1 of 15 Item7 Information STYLE="font-family:Times New Roman" SIZE="2"> The securities being reported on by the reporting persons herein parentmpanies are owned, or may be deemed to be beneficially owned follows:mpany Type ofmpany. First State Investments (Hong Kong) Limited IA (HK registered)]