of the Securities and Exchange Commission No. OrKhor./Nor. 5/2549 Re: Guidelines Relating to Operating Systems of Fund Management Business In order for a management company to comply effectively with

: Certification of Information Attachment details of director, executive, deputy manager, assistant manager, director of department, and persons holding equivalent position called by other names who responsible for

INFORMATION A. Memorandum and Articles of Association × B. Material Contracts × C. Exchange Controls × D. Statement by Experts × E. Sign offs or consents from persons advising the issuer in the preparation of

(Additional) To President The Stock Exchange of Thailand Enclosure 1. Information Memorandum on the Asset Acquisition (Addendum 1) regarding acquisition of shares of S-TREK (Thailand) Co., Ltd. in the

  March 20, 2018 Subject The amendment of Information Memorandum on Acquisition of Assets To President The Stock Exchange of Thailand According, Bangkok Dec-con Public Company Limited has reported

1 --Translation-- Sor Gor 7/2018 January 19, 2018 Subject: Management Discussion and Analysis for the year ended December 31, 2017 (Unaudited) To: The President The Stock Exchange of Thailand

1 --Translation-- Sor Gor 11/2018 February 22, 2018 Subject: Management Discussion and Analysis for the year ended December 31, 2017 (Audited) To: The President The Stock Exchange of Thailand

179,674 3.6 Fees and services expenses 597,665 442,747 154,918 35.0 Fees and services income, net 4,604,034 4,579,278 24,756 0.5 Gain on trading and foreign exchange transactions, net 276,581 457,007

exchange transactions, net 106,785 162,815 (56,030) (34.4) Gain (loss) on financial liabilities designated at fair value through profit or loss, net (87,923) 15,923 (103,846) (652.2) Gain (loss) on

services expenses 138,115 114,723 23,392 20.4 Fees and services income, net 1,015,355 1,063,006 (47,651) (4.5) Gain on trading and foreign exchange transactions, net 115,364 87,750 27,614 31.5 Gain (loss) on