determination of record date and the date of 2020 Annual General Meeting of Shareholders) To: President The Stock Exchange of Thailand Attachment: 1. Financial assistance to KT Medical Service Company Limited 2

a Connected Transaction The Board of Directors Meeting of Takuni Group Public Company Limited (“the Company”) No. 5/2018 held on 30 March 2018 has approved Takuni Land Company Limited (“Takuni Land

ที่ กม Translation No. Gor.Mor. 49/2560 December 20, 2017 President The Stock Exchange of Thailand Dear Madam, Approval for Selling Land for Investment Purposes The Board Meeting of O.C.C. Public

1 / 3 No.IR.003/2019 28 February 2019 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

Company’s land To: The President The Stock Exchange of Thailand The Board of directors meeting # 8/2019 held on June 4, 2019 has a resolution to sell a piece of land to increase liquidity and reduce the

October 30, 2020 Subject: The Management Discussion and Analysis for the year ended 31st December 2019 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

Stock Exchange of Thailand without the approval from the shareholders. - 5 - 2) Appointment of the Company’s Executives The Meeting approved the appointment of the Company’s Executive and the Executive

December 12, 2018 Subject : Acquisition of 84.50% shares of WPS (Thailand) Co., Ltd. Attention : Director and Manager Stock Exchange of Thailand Enclosure : 1. Memorandum of the Acquisition of Asset

Extraordinary General Meeting of the Shareholders No. 2/ 2 5 6 1 , Land purchased from the connected person and sell in investment of the subsidiary (Revised 2) Attention The President The Stock Exchange of

World Corporation Public Company Limited ( “the Company”) No.3/2018 held on April 11, 2018 at 13.00 hrs. has passed the following resolutions: 1. Has approved the financial statements for the quarter 3