1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company (edit) To: President, The Stock Exchange of Thailand T.K.S. Technologies Public

1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company (edit no.2 ) To: President, The Stock Exchange of Thailand T.K.S. Technologies Public

. After this situation, Vibharam will change status from Associated to Subsidiary Company of Ramkhamhaeng. Detail of the transactions are as follow. 1. Transaction date With in January, 2020. 2. Parties

; - FX gain of 532 million Baht; - the adjustment of the provision for rental assurance of OFCs of JASIF due to the change of the assumption (rental rate increase), amounting 497 million Baht; 2/2 and

greatly contracted by trade impacts and the higher For three months For nine months Consolidated financial statement ended 31st December ended 31st December Oct - Dec 2019 Oct - Dec 2018 Change % Change Apr

month period ended 31 March 2020 and 2019 are as follows; Unit: THB million Q1-2020 Q1-2019 % Change 1. Revenue from sales and contract work 4.7 3.2 44.2% 1.1 Turnkey Total Solutions 4.7 3.2 44.2% 2

Apparent Finished Steel (Unit : Tons) Quarter 1/2019 Quarter 1/2020 % Change Production 1,998,519 2,017,445 0.95% Import 2,856,359 2,680,405 -6.16% Export 401,798 301,219 -25.03% Consumption 4,453,080

March 2020 31 March 2019 Change For the 3 months period ended Page 2 Revenue from Sale of real estate Revenue from sale of real estate for the 3-months period ended 31 March 2020 and 2019 were THB 233.51

government’s measures. The health and safety of our customers and associates remains our top priority. We rapidly transformed and adapted to the change in consumer behavior by utilizing the Company’s existing

(“the Group”) and separate financial statements of the Company for the three-month period ended June 30, 2020. The Company would like to report the change of our operating results as follow: For the 2nd