tons) 188 188 HRC Production Volume (k tons) 188 190 HRC Average Selling Price (Bht./ton) 17,403 17,469 H R C HRC Cash Margin (Bht./Ton) 1,033 3,647 Unit: million Baht 2 nd Quarter 2017 Year-end 2016

tons) 197 377 EBITDA 155 132 Net Profit (Loss) (72) (451) HR C HRC Sales (k tons) 197 377 HRC Production Volume (k tons) 204 363 HRC Average Selling Price (THB./ton) 19,891 20,709 HRC Cash Margin (THB

 exchange rate. Quarter Quarter % THB '000 Q118 Q117 Q118‐Q117 Q118‐Q117 PCBA (Lamphun, Thailand) 2,242,565            43% 1,949,694             38% 292,871                15% PCBA (Jiaxing, China) 813,220

@halcyon.co.th No. CS-2563/013 14 August 2020 Subject: Management Discussion and Analysis for the 3-Month Period Ended 31 March 2020 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology

with the same period of the previous yearly To: The President The Stock Exchange of Thailand Due to The Manufacturing Production Index (MPI) grew by 1.58 percent from 2016, making Thai economy more

analysis for the three-month period ended June 30, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of reviewed financial statements for quarter 2/2019 of Wiik

177 HRC Production Volume (k tons) 185 139 HRC Average Selling Price (THB./ton) 15,885 19,160 HRC Cash Margin (THB./Ton) 590 (58) Unit: million Baht 31 March 2020 31 December 2019 F in a n ci a l S ta

- Translation - 11 November 2019 Subject: Management’s Discussion and Analysis for the Operating Results of the 3 rd Quarter of 2019 Attention: The President of the Stock Exchange of Thailand Exotic

last year. Meanwhile, imports of Hot Rolled Steel decreased by 14% and Domestic Production increased on 11.5% compared to same period last year. The trade war between USA-China, high imports due to

(-Translation-) Ref. No. SorNor. 24/2019 February 13, 2019 To: The President The Stock Exchange of Thailand Re: Disclosure of Information regarding Connected Transaction by Subsidiary Whereas, the