the Securities and Exchange Act B.E. 2535 (1992), as amended by the Securities and Exchange Act (No.4) B.E. 2551 (2008), and Section 100, Section 109 and Section 117 of the Securities and Exchange Act

documents shall be in accordance with the law relating to securities and exchange as well as the notifications, regulations or orders issued under the said law and shall not contain anything contrasting with

. Securities Code: TKT 2. Date of action resulting in reporting obligation: 29 October 2020 2.1 () Acquisition ( ) Disposition ( ) Through the Stock Exchange of Thailand via a securities company: Thai

. Securities Code: TKT 2. Date of action resulting in reporting obligation: 24 November 2020 2.1 () Acquisition ( ) Disposition ( ) Through the Stock Exchange of Thailand via a securities company: Thai

the Agenda of the Extraordinary General Meeting of the Shareholders No. 1/2019. (Amendment 3) To : The Directors and Managing Director. The Stock Exchange of Thailand. The Board of Director‟s Meeting of

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

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

., and Schedule for the EGM of Shareholders No. 1/2019 (Revised2) To: The President The Stock Exchange of Thailand Enclosure: 1. Information Memorandum of Hydrotek Public Company Limited on Disposal of

., 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

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