(ThaiCERT). Given the more sophisticated cyber risks, financial institutions as service providers, and customers as users, are increasingly vulnerable to losses. In terms of cyber security readiness, however

risk in the future given the different levels of technological readiness among peers, and between banks and other businesses, as well as sudden shifts in circumstance such as a change in transaction

basis of capital adequacy, readiness of business operation, internal control system, risk management system, conflict of interest prevention system and customer service system. To promote derivatives

debts owed to the Mahachai Group. (For details of the readily available funds, expertise in various industries, readiness to offer funding to support the Company’s continuous operation in the future, and

transactions will also help the Company to repay its debts owed to the Mahachai Group. (For details of the readily available funds, expertise in various industries, readiness to offer funding to support the

industries, readiness to offer funding to support the Company’s continuous operation in the future, and the repayment of debts owed to the Mahachai Group, please see 4.2 Rationale and Necessity of the Offering

1/8 เลขท่ี 1 อาคาร ทีพี แอนด์ ที ชัน้ 14 ซอยวิภาวดีรังสติ 19 14th Floor, TP&T Tower 1 Soi Vibhavadee-Rangsit 19 Tel : (662) 936-1661-2 แขวงจตจุกัร เขตจตจุกัร กรุงเทพฯ 10900 Chatuchak, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 079/0960 25 September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary...

1/8 เลขท่ี 1 อาคาร ทีพี แอนด์ ที ชัน้ 14 ซอยวิภาวดีรังสติ 19 14th Floor, TP&T Tower 1 Soi Vibhavadee-Rangsit 19 Tel : (662) 936-1661-2 แขวงจตจุกัร เขตจตจุกัร กรุงเทพฯ 10900 Chatuchak, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 082/0960 25 September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary...

1/8 เลขท่ี 1 อาคาร ทีพี แอนด์ ที ชัน้ 14 ซอยวิภาวดีรังสติ 19 14th Floor, TP&T Tower 1 Soi Vibhavadee-Rangsit 19 Tel : (662) 936-1661-2 แขวงจตจุกัร เขตจตจุกัร กรุงเทพฯ 10900 Chatuchak, Chatuchak, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขท่ี 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จ ำกดั (มหำชน) (Translation) No. 084/0960 26 September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary...

UNOFFICIAL TRANSLATION Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. Notification of the Office of the Securities and Exchange Commission No. Nor Por. 3/2559 Re: Guidelines for Establishment of Information Technology System ______________________ Whereas the Notification of the Capital Market Supervisory Board No. Tor Thor. 35/2556 Re: Standard Conduct of Business, Management Arrangement, Operating Systems, a...