1 August 17, 2018 Subject: Capital Increase for Offering for Sale to Specific Investors (Private Placement), Connected Transaction, Amendments to Articles of Association/Objectives of the Company and Determination of the Date of Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosures: 1. Information Memorandum on the Offering of Newly Issued Ordinary Shares to Specific Investors (Private Placement) at the Offering Price with a Discount of...

, Bangkok 10900, Thailand Fax : (662) 936-1669 ทะเบียนเลขที 0107554000097 Registration No. 0107554000097 HYDROTEK PUBLIC COMPANY LIMITED บริษทั ไฮโดรเท็ค จํากดั Classified into Ordinary Shares 970,283,450