1 / 2 IR.019/2017 15 August 2017 Re: Clarification on the change of profit and loss statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

-5170529 14 November 2017 RE: Explanation of performance for the third quarter of 2017 with a change exceeding twenty percent from the previous year. ATTN: Managing Director, Stock Exchange of Thailand

1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company To: President, The Stock Exchange of Thailand T.K.S. Technologies Public Company

operating result change Excess 20% (Additional) Dear Sirs, We would like to report financial operating result for financial year ended June 30, 2019 as followings: 1. Our net loss before tax is 103.23 Million

betterment of our society” Mary Leung, CFA, Head, Advocacy, Asia Pacific, CFA Institute, said, “Within the wide-ranging discussions about ESG issues, CFA Institute is specifically focused on the quality and

is therefore conducting this public hearing on the proposed principles for shelf filing ICOs and the proposed change to the total amount of funds raised from retail investors, as well as draft

, in case of change in the information, management company shall update the information within fourteen days from the date of such change Chapter 2 Granting Approval and Performing Duty of Manager of

Nation U Co., Ltd., the subsidiary of the Company, and change in the accounting policy regarding the record of the land valuation To: Director and Manager The Stock Exchange of Thailand (SET) Attachment

- 2017 Balance by Quarter Change Q2-2017 Q1-2017 Q2-2016 Q2-2017 VS Q1-2017 Q2-2017 VS Q2-2016 (MB) (MB) % (MB) % Total Revenue 1,345.4 1,139.2 1,212.2 206.2 18.1% 133.3 11.0% Total Operating Expenses

., the subsidiary of the Company, and change in the accounting policy regarding the record of the land appraisal To: President The Stock Exchange of Thailand Attachment: Information Memorandum on the Asset