September 2017 Subject: Notification of the Board of Directors No.8/2017 and the date of the Extraordinary General Meeting of Shareholders No. 1/2017 (Amended 3) To: The President The Stock Exchange of

Acquisition. To: The President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Acquisition of Assets of Hydrotek Public Company Limited 2. Capital Increase Form (F 53-4) 3. Information

hospitality industry, which directly impacted to DTC’s business and performance in 2Q20. DTC recorded a net loss of THB 453 million in 2Q20, compared to net loss of THB 22 million in 2Q19. The loss was driven

recorded in 4Q20 in amount of Bt246mn, with an approximately similar amount for the next four years. Market and Competitive Environment FY20 marked the beginning of the 5G network and service in Thailand

(Translation) No. CK-19-0000-PO-L-0008 February 28, 2019 Re: Scheduling of the 2019 Annual Ordinary General Meeting of Shareholders and Declaration of Dividend Payment Attn: President of the Stock

the Stock Exchange of Thailand CH. Karnchang Public Company Limited hereby informs the resolutions of the Board of Directors’ Meeting No. 1/2019 which was held on February 28, 2019 as follows: 1

in Securities Business. 1.2 Order collecting process. 1.3 Rectification and amendment of orders recorded in error, for instance timeframe, procedures and the person so assigned. 1.4 Verification of

Rectification and amendment of orders recorded in error, for instance timeframe, procedures and the person so assigned. 1.4 Verification of clients’ order for accuracy and completeness disbursement 1.5 Control of

companies under the market capital of THB 30,000 - 100,000 million from SET Awards 2019, organised by the Stock Exchange of Thailand and Money and Banking Magazine. Furthermore, the company remains listed to

November 13, 2017 The President & Director, The Stock Exchange of Thailand (SET) LETTER OF CLARIFICTION: CENTEL’s Q3/2017 & YTD 9 MONTHS /2017 OPERATING PERFORMANCE RESULTS This is to inform the SET