No. ECF2 044/2561 3 December 2018 Subject: Notification of the resolutions of the Board of Directors’ Meeting approving the investment in purchasing the ordinary shares of S-TREK (Thailand) Co., Ltd

Tender Offer for all Securities in Thai British Security Printing Public Company Limited, Increase of the Registered Capital, Allocation of the Newly Issued Ordinary Shares to the Company’s Existing

Capital, Conditional Voluntary Tender Offer for all Securities in Thai British Security Printing Public Company Limited, Increase of the Registered Capital, Allocation of the Newly Issued Ordinary Shares to

150,000,000 Baht, by issue new ordinary shares 1,490,000 shares with par value of 100 Baht. Total capital increase is 149,000,000 Baht 3. To approve the sell in investment of the subsidiary 765,000 shares of

Determination of the Date of Extraordinary General Meeting of Shareholders No. 1/2018 To: President The Stock Exchange of Thailand Enclosures: 1. Information Memorandum on the Offering of Newly Issued Ordinary

-Translation- No. ECF2 044/2561 3 December 2018 Subject: Notification of the resolutions of the Board of Directors’ Meeting approving the investment in purchasing the ordinary shares of S-TREK

Precedent. 2. Parties involved or Seller IGEN Engineering Co., Ltd. (“IGEN”) Not connected person. 3. Details of asset acquired Type Ordinary shares. Company‟s name IGEN Energy Co., Ltd (“IGEN-ENERGY

Company Limited equivalent to 74,000,000 ordinary shares at the par value of Baht 10 per share, totaling transaction value of Baht 1,695 million 2. The meeting resolved to approve the authorization of

and Allocation of the Newly Issued Ordinary Shares and the Newly Issued Convertible Debenture of Hydrotek Public Company Limited to the Specific Investor (Private Placement) 3. Capital Increase Report

the Offering and Allocation of the Newly Issued Ordinary Shares and the Newly Issued Convertible Debenture of Hydrotek Public Company Limited to the Specific Investor (Private Placement) 3. Capital