No. ACC 07/2017 SUBJECT EXPLANATION FOR THE INCREASE IN NET PROFIT OF OVER 20 PERCENT FOR YEAR 2016, COMPARED TO THE PREVIOUS YEAR ATTENTION PRESIDENT, THE STOCK EXCHANGE OF THAILAND Khon Kaen Sugar

) and the levelized AP (accounting revenue).  GNLL2, an installed capacities of 127 MW SPP, representing 32 Equity MW achieved COD in January 2019.  WHAUP Nghe An Joint Stock Company (the Company’s

President The Stock Exchange of Thailand Capital Engineering Network Public Company Limited (“the company” or “CEN”) hereby noticed that resolution from Board of Directors No.4/2020 held on August 14, 2020

ที่ - Translation - PorBor.076 / 2017 November 14, 2017 Subject: Clarification of operating results change from the same period last year by more than 20% To: President The Stock Exchange of Thailand

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 second quarter ended June 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

1 - Translation – Bor.Chor.Ngor 0328/2017 September 26, 2017 Subject: Connected transaction : Renewal of a hotel management advisor agreement Attn : President The Stock Exchange of Thailand With

1 / 2 No.IR.018/2020 14 May 2020 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited (the

this application. b. Please mark an X in the appropriate box corresponding to your answer c. Send complete and signed form to Accounting Supervision Department The Securities and Exchange Commission

ที่ บช NO. AC. 04/2019 14 November 2019 Subject: Clarification of changes in operating performance of more than 20% To: The President of the Stock Exchange of Thailand M.K. Real Estate Development