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

Position of the Company and its Subsidiaries (Unit: Baht Million) 30 December 2019 31 December 2018 % Change Cash and cash equivalents 119 103 15.1% Account receivables 737 700 5.3% Inventories 512 885 (42

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

alternative for consumers. Consolidated Q1/ 2020 Q1/ 2019 Change Financial Statements (Million Baht) (%) (Million Baht) (%) (%) Revenue from Sales 1,110.0 100.0 % 1,280.3 100.0 % (13.3 %) Cost of Sales (808.1

while in 2019 is at 8.2% of revenue from sales, increased from the same period last year by Baht 10.1 million or 31.8%. The change due to loss from exchange rate, devaluation in short-term investments and

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