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
the Connected Transaction and Scheduling of Extraordinary General Meeting of Shareholders No. 1/2017 Attention : The President of the Stock Exchange of Thailand Enclosure: Information Memorandum on the
into the Connected Transaction and Scheduling of Extraordinary General Meeting of Shareholders No. 1/2017 Attention : The President of the Stock Exchange of Thailand Enclosure: Information Memorandum on
the Information Memorandum on Asset Disposal, Transaction No. 2, and are attached hereto as Enclosure 3. Sincerely yours, (Mr. Peerapong Jaroon-ek) Director and Chief Executive Officer Authorized
Province of Planet Board Company Limited, which is a Subsidiary of the Company Attention President The Stock Exchange of Thailand Enclosure Information Memorandum on Acquisition of Assets of East Coast
Province of Planet Board Company Limited, which is a Subsidiary of the Company (Additional) Attention President The Stock Exchange of Thailand Enclosure Information Memorandum on Acquisition of Assets of
Connected Transaction and the Scheduling of the Extraordinary General Meeting of Shareholders No. 1/2019 Attention : The President of the Stock Exchange of Thailand Enclosure : Information Memorandum on
Enclosure: Information Memorandum of Pace Development Corporation Public Company Limited on Acquisition and Disposition of Assets Pace Development Corporation Public Company Limited (the "Company") would like
: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation Public Company Limited The Meeting of the Board of Directors No. 8/2017 of