15, 2017 Subject: MD&A for the financial statements of the 1st quarter of fiscal year 2017 ended as of March 31, 2017 To: The President The Stock Exchange of Thailand Aapico Hitech Public Company

of the plant and machineries from an independent engineering expert. The effect of such change in the estimated useful lives of assets to the depreciation charge during the quarter is as below; Unit

Discussion & Analysis Q2/2022 Operating Highlights in Q4/2021 Q2/21 Q2/22 Change +/(-) 1H/21 1H/22 Change +/(-) (THB million) %YoY %YoY Operating Revenue 137 230 68% 317 428 35% Gross Profit 77 147 91% 183 267

Summary Significant Event Operating Highlights in Q1/2023 Q2/22 Q2/23 Change +/(-) 1H/22 1H/23 Change +/(-) (THB million) %YoY %YoY Operating Revenue 230 299 30% 428 563 32% Gross Profit 147 192 31% 267 361

Change (%) Gross profit margin 41.99 42.73 (0.74) Selling and administrative expenses to total revenues 38.31 34.43 3.88 Net profit margin 5.74 8.51 (2.77) 1. Total revenues Total revenues of 1Q18

ที่ FPI Ref. FPI.007/2019 14 August 2019 Subject : Management Discussion & Analysis of Performance Results of Quarter 2/2019 (edit) To : Board of Directors and President of The Stock Exchange of

15 November 2017 Subject: Management Discussion and Analysis for the 9-Month Period Ended September 30, 2017 To: Directors and Managers The Stock Exchange of Thailand Halcyon Technology Public

Public Company Limited (“the Company”) would like to submit the management discussion and analysis of the operating results for the nine months of 2020 ended September 30, 2020 as follows: Overall Group

Microsoft Word - MDA FY18 EN February 20, 2019 To President The Stock Exchange of Thailand Subject Notification on the difference of revenue from sales and net profit YOY by more than 20 percent

Microsoft Word - MDA Q319 EN.docx November 11, 2019 To President The Stock Exchange of Thailand Subject Notification on the difference of revenue from sales and net profit YOY by more than 20 percent