26 February 2019 Subject: Management Discussion and Analysis for the Year Ended December 31, 2018 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public Company Limited

19 September 2005 - Translate – Ref. HF 0109/2018 August 6th, 2018. Subject : Disclosure of Connected Transaction. Attn : Managing Director of the Stock Exchange of Thailand. According to the

NO. OMD011/2562 15 May 2019 Re Explanation and analysis of the Management for the 1st quarter of 2019 ended 31 March 2019 To Director and Manager, Stock Exchange of Thailand Whereas the Meeting No. 2

/FS_PAGE_0551_E_2018-03-16_6671089902.pdf 20093956.pdf Stock Exchange of Thailand as follow: 1. Total sales revenue and service was 52.38 million baht consisting of Selling on steel products in the amount of 51.59

1 No. CC20180203ELE February 23, 2018 Subject Report of the Resolutions of Board of Directors’ Meeting No.1/2018 To President The Stock Exchange of Thailand The Board of Directors of Cal-Comp

Jor. 62/2561 Re: Offer for Sale of Bonds Denominated in Foreign Currency in the Kingdom of Thailand ________________ By virtue of Section 16/6 of the Securities and Exchange Act B.E. 2535 (1992), as

failure of computer systems used for trading securities by companies which are members of the Stock Exchange of Thailand. If the incident results in no ability in recording an offer for trading come from

the Stock Exchange of Thailand. If the incident results in no ability in recording an offer for trading come from variuos companies into a trading system at the same time and last longer than a period

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MD&A Q4_2019 (Eng ) February 19, 2020 Subject : Yearly Management Discussion and Analysis of 2019 Attention : President of The Stock Exchange of Thailand We attach herewith the financial statements