employees of BBGI and its subsidiaries, and the date for the Company’s Annual General Meeting of Shareholders for Year 2018 Attention : President of the Stock Exchange of Thailand Attachment : Preliminary

Payment of Corporate Guarantee fee for the relating company (RPT) To: The Managing Director The Stock Exchange of Thailand (SET) According to the Extraordinary Shareholders Meeting of Phuket Fantasea Public

Exchange of Thailand According to the Board of Directors Meeting of Bangkok Dec-Con Public Company Limited (the "Company") No. 9/2018 held on 28 November 2018 has approved a change in the method of payment

1/2 RC 57/18 6 November 2018 Subject : Report on the Company’s operating results for the third quart er of the year 2018 Attention : President of the Stock Exchange of Thailand The Board of Directors

to the Stock Exchange of Thailand (the “SET”) until the Company and the Purchaser has signed the Land and Buildings sale and purchase agreement and the security deposit as agreed in the amount of THB

1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company (edit no.2 ) To: President, The Stock Exchange of Thailand T.K.S. Technologies 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

the Board of Directors’ meeting for connected transaction and Schedule date for the Extraordinary General Meeting of Shareholders No. 1/2016 To: The President, The Stocks Exchange of Thailand The Board

Ref.No.1905/026EN July 16, 2019 Subject Inform about The Connected Transaction (Amendment) Attention President of the Stock Exchange of Thailand According to the Board of Directors Meeting No.9/2019

Stock Exchange of Thailand. However, the Company is not required an approval from the shareholders’ meeting. Criteria for calculation of the transaction regarding acquisition and disposal of the assets