Subsidiary’s Machines for the Debenture Debt repayment To: President The Stock Exchange of Thailand Reference: Letter of Rich Asia Corporation Public Co., Ltd. No. PorBor. 001/2020 dated January 6, 2020 and

Powertech Company Limited (“IGP”), which 51% shares owned https://market.sec.or.th/public/idisc/Views/Download?FILEID=dat/news/201909/19089007.pdf 20093956.pdf Stock Exchange of Thailand as follow: 1. Total

approved exemption of application fee for an approval of public offering of shares and the Stock Exchange of Thailand (SET) to exempt the application fee for listing of ordinary shares as listed securities

pushed securities price , which violated the Stock Exchange of Thailand (SET)'s rules. The SEC is of view that investor contact should exercise his own discretion on trading orders received from the client

Bangkok, 20 October 2016 - The SEC has suspended approval of 11 investment consultants of six securities companies for soliciting investors to purchase IPO and over-the-counter shares to seek

Date : 23/02/2001 09:16:00 -Translation- 14 November 2017 Subject : Information Memorandum Concerning Acquisition of Assets Attention : President The Stock Exchange of Thailand Vanachai Group Public

Date : 23/02/2001 09:16:00 -Translation- 15 November 2017 Subject : Information Memorandum Concerning Acquisition of Assets (revised) Attention : President The Stock Exchange of Thailand Vanachai

calculating the size of transaction in accordance with Rules on Connected Transactions, the Company is required to ask for the approval from the Board of Directors and to disclose the information to the Stock

No. BGRIM 2/2019 January 15, 2019 Subject: Additional Investment in Nam Che Hydro Power Co., Ltd. Attn: President The Stock Exchange of Thailand On January 14, 2019, the Board of Directors’ Meeting

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