% Operating profit 10,731 10,063 10,103 -5.9% 0.4% 21,610 20,165 -6.7% Net foreign exchange gain (loss) 106 84 252 137% 200% (23) 336 -1569% Other income (expense) 76 221 107 41% -51% 324 328 1.2% Finance cost

(Translation) UAC.CS/003/2020 February 27, 2020 Subject: Explanation of the operating results for the year period ended December 31, 2019 To: President The Stock Exchange of Thailand Attachment

(Translation) UAC.CS/002/2019 February 28, 2019 Subject: Explanation of the operating results for the year period ended December 31, 2018 To: President The Stock Exchange of Thailand Attachment

(Translation) UAC.CS/012/2020 May 14, 2020 Subject: Explanation of the operating results for the first quarter period ended March 31, 2020 To: President The Stock Exchange of Thailand Attachment

has changed slightly, Particleboard has increased by 19%. 2. Cost of sales Baht 2,392.5 million, increased of Baht 425.5 million. Because the increasing cost of raw material in manufacturing. Financial

and Particleboard have increased by 2% and 12% respectively. 2. Cost of sales Baht 2,463.3 million, increased of Baht 480.6 million. Because the increasing cost of raw material in manufacturing

decreased by 1% and Particleboard has increased by 11%. 2. Cost of sales Baht 9,343.7 million, increased of Baht 1,470.4 million. Because the increasing cost of raw material in manufacturing. Financial status

หน้า 1 ของ 3 (Translation) No. ACC6702/001 February 28, 2024 Subject: Clarification of operating results for the Annual Year 2023 (Revised) To: The President, The Stock Exchange of Thailand Advanced

1 Ref: AC.006/2019 25 February 2019 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

company still has operating loss, however the loss likely to decrease gradually. Trend of year 2 017 The company is focus on increasing the efficiency of the manufacturing process, control cost and