Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (     ) Acquisition (  ) Disposition (     ) Through the Stock Exchange of Thailand via a securities company

Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (     ) Acquisition (  ) Disposition (  ) Through the Stock Exchange of Thailand via a securities company

Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (     ) Acquisition (  ) Disposition (  ) Through the Stock Exchange of Thailand via a securities company

Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (     ) Acquisition (  ) Disposition (  ) Through the Stock Exchange of Thailand via a securities company

Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (  ) Acquisition (     ) Disposition (  ) Through the Stock Exchange of Thailand via a securities company

Report of the Acquisition or Disposition of Securities (Form 246-2) 2.1 (  ) Acquisition (     ) Disposition (  ) Through the Stock Exchange of Thailand via a securities company

Exchange of Thailand Enclosure Capital Increase Form (F 53-4) (amended) Following Hydrotek Public Company Limited (the “Company”)’s Board of Directors’ Meeting No. 10/2017 held on October 19, 2017 at 5.00 pm

. 20/2551 Re: Rules on Entering into Material Transactions Deemed as Acquisition or Disposal of Assets dated 31 August 2008, and the Notification of the Board of Governors of the Stock Exchange of

reference. Notification of the Office of the Securities and Exchange Commission No. Sor Thor. 14/2558 Re: Rules in Detail on the Prevention and Management of Conflicts of Interest __________________ By virtue

reference. PAGE 10 Notification of the Office of the Securities and Exchange Commission No. Sor Thor. 14/2558 Re: Rules in Detail on the Prevention and Management of Conflicts of Interest __________________