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

12 December 2017 Subject: Resolutions of Board of Directors Meeting No. 14/2017 Attention: President Stock Exchange of Thailand Enclosures: 1. Information Memorandum on Asset Disposal, Transaction No

Governing Members of The Stock Exchange Market of Thailand Origin Property Public Company Limited and its subsidiaries hereinafter called “The Group” For the 6 months ended June 30, 2017. The operating

-Translation- Ref. IR 62/005 March 13, 2019 Subject: transaction yDisclosure of the information regarding related part To : President, The Stock Exchange of Thailand T.K.S. Technologies Public

-Translation- Ref. IR 62/005 March 13, 2019 Subject: Disclosure of the information regarding related party transaction (Additional Information) To : President, The Stock Exchange of Thailand T.K.S

ended June 30, 2018. To The President of The Stock Exchange of Thailand Origin Property Public Company Limited and its subsidiaries hereinafter called “The Group” For the 6 months period ended June 30

-month period ended March 31, 2020 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of the reviewed financial statements for quarter 1/2020 of WIIK Public Company

) To: 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

flexibility of GPSC Group’s financial management via local and international funding, foreign exchange management, and cash management activities. The establishment of the GPSC TC is to support the expansion of

Section 113 Securities and Exchange Act B.E. 2535 Section 113. In operating the business of securities brokerage in the Securities Exchange for listed securities, a securities company shall operate