-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

contents are written and underlined in blue. No. ORI 66/2017 1 November 2017 Subject: Resolutions of Board of Directors Meeting No. 12/2017 Attention: President Stock Exchange of Thailand Enclosures: 1

February 21,2020 Subject: Notification of the disposal of in the Biogas Power Plant Business of Akkrawat Crop Rotation Energy Company Limited Attention: President Stock Exchange of Thailand Demeter

, 2017 which prior to Board of Director’ Company. The exchange rate is referred to the Bank of Thailand. After the transaction’s completion, CRSB will hold NDR’s ordinary shares for 20.31% of paid

. To: President The Stock Exchange of Thailand The Board of Directors of Eastern Water Resources Development and Management Public Company Limited (“Company / EASTW”) at the meeting No.9/2020 held on May

per MYR on November 24, 2017 which prior to Board of Director’ The exchange rate is referred to the Bank of Thailand. After the transaction’s completion, CRSB will hold NDR’s ordinary shares for 20.31

of the Issuance and Offering of the Warrants to Purchase Ordinary Shares of the Company to Employees of the Company and/or its Subsidiaries Cal-Comp Electronics (Thailand) Public Company Limited (“CCET

Thailand CH. Karnchang Public Company Limited (the “Company”) hereby reports the connected transaction among the Company and Expert Transport Co., Ltd., whose shares are held by the Company’s major

Stock Exchange of Thailand Enclosure 1. Information Memorandum on acquisition of all shares in Nam San 3A Power Sole Co., Ltd. and Nam San 3B Power Sole Co., Ltd of BCPG Public Company Limited to invest

(Edited Information Memorandum on the Acquisition of Assets) To President The Stock Exchange of Thailand Enclosure: Information memorandum regarding the acquisition of up to 40% shares of total paid-up