(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

from Operating Activities Cash from operating activities was Baht 601.7 million. The main components were (i) deposits received from sales of investment in subsidiary, (ii) decrease in trade and other

for the twelve-month period ended 31 December 2017 4.1 Cash from Operating Activities Cash from operating activities was THB 835.8 mn. The main components were (i) an increase in trade and other

equivalent items increased Baht 113.1 million. 2. Trade and other receivable decreased Baht 484.9 million. 3. Revenue Department receivable increased Baht 40.4 million. 4. Inventories increased Baht 428.4

SRF factory has been operating since February and started receiving from customers, however, the company has not delivered SRF to any customer in Q1/2017. The company is developing the suitable SRF

Baht 42.05 million. 2. Trade and other receivable decreased Baht 84.0 million. 3. Revenue Department receivable increased Baht 30.79 million. 4. Inventories increased Baht 328.87 million, mainly caused

equivalent items decreased Baht 236.2 million. 2. Trade and other receivable increased Baht 89.6 million. 3. Revenue Department receivable increased Baht 23.3 million. 4. Inventories increased Baht 542.9

Ref : JSP 035/2563 August 10, 2020 Subject : Report the operating results for the 2nd quarter ended June 30, 2020 To : The President The Stock Exchange of Thailand Dear Sir, Re. Operating report for

205mn ordinary shares at an offering price of THB 1.60 per share • On 24 April 2019, the shareholder meeting has approved the cash dividend payment from the operating results of the second half of 2018 at