ประกาศคณะกรรมการกำกับหลักทรัพย์และตลาดหลักทรัพย์ TRANSLATED VERSION Codified up to No. 2 As of August 26, 2014. Readers should be aware that only the original Thai text has legal force and that this

(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 Capital Market

TRANSLATED VERSION As of February 9, 2011 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

UNOFFICIAL TRANSLATION Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. The SEC, Thailand can neither undertake

- ร่าง - 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 Capital

(UNOFFICIAL TRANSLATION) Codified up to No. 5 As of 3 July 2018 Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference

Translation (Unofficial Translation) (Translation) -9- Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. The SEC

(UNOFFICIAL TRANSLATION) Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. The SEC, Thailand cannot undertake any

political activities. Governance The Company is aware of the industry risks, therefore, we place importance to technology development and management as well as financial innovations in response to customer’s

seeking for an environmental engineering project. Furthermore, it is a synergy and an increase in the Company’s competitiveness. The Board of Directors is well aware of the dilution effect, however