Offeror : THAI INDUSTRIAL GASES PLC. | Date of submission of the Statement of Intention : 30/05/2002

Offeror : THAI INDUSTRIAL GASES PLC. | Date of submission of the Statement of Intention : 29/08/2002

Offeror : UNITED OVERSEAS BANK LIMITED | Date of submission of the Statement of Intention : 09/08/2004

Offeror : UNITED OVERSEAS BANK LIMITED | Date of submission of the Statement of Intention : 22/05/2006