of Approval for Investor Contacts In continuation of the Notification of the SEC Office No. SorKhor. 15/2548 Re: Approval for Investor Contacts and Standards of Conduct dated 21 June 2005 as amended by

the period in continuation of the period approved under the Notification No. SorKhor. 25/2547. Clause 15. The applicant for approval for investor contact who has qualifications and submits the

; · abnormal operation ; · compliance and alteration a network by unauthorized person. · Preparing a network diagram which having a detail related to scope of internal network and external network and other

organization, use of information and information systems in compliance with assigned roles and responsibilities, unauthorized access, abnormal and/or illegal use of information systems and user identification of

conflict of interest in the organization, use of information and information systems in compliance with assigned roles and responsibilities, unauthorized access, abnormal and/or illegal use of information