assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise 3) To : President, The Stock Exchange of Thailand Attachment : 1. Capital Increase Report Form (F 53-4) 2

to investors in private placement, the acquisition of assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise) To : President, The Stock Exchange of Thailand

to investors in private placement, the acquisition of assets and convening the Extraordinary General Meeting of the Shareholders No. 1/2018 (Revise 2) To : President, The Stock Exchange of Thailand

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised3) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

UNOFFICIAL TRANSLATION Codified up to No. 12 As of 14 February 2017 Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for

(UNOFFICIAL TRANSLATION) Codified up to No.12 As of 6 August 2018 Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference

(UNOFFICIAL TRANSLATION) Codified up to No.12 As of 6 August 2018 Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference

(UNOFFICIAL TRANSLATION) Codified up to No.12 As of 6 August 2018 Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference

เดียวกันกับตราสารทุน แบบฟอรม ณ วนัที ่1 ก.พ. 52 27 1.1 หุนสามัญ / หุนบุริมสิทธิ (common stock / preferred stock) 1.1.1 หุนใน SET 50 และหุนตางประเทศในกลุม large market capitalization หมายถึง หุนที่

นที่มีความเส่ียงในลกัษณะ เดียวกันกับตราสารทุน แบบฟอรม ณ วนัที ่1 มี.ค. 53 27 1.1 หุนสามัญ / หุนบุริมสิทธิ (common stock / preferred stock) 1.1.1 หุนใน SET 50 และหุนตางประเทศในกลุม large market