2017 ended December 31, 2017 of the Company and its subsidiaries, as shown below : (Unit : Million Baht) 2017 2016 Change Revenue 837 849 -1.4% Gross profit margin 293 342 -16.7% Selling Expenses 80 96

shown below: (Unit : Million Baht) 2017 2016 Change Revenue 837 849 -1.4% Gross profit margin 293 342 -14.3% Selling Expenses 80 96 -16.7% Doubtful debts from the voiding of contract 320 - 100.0% Finance

higher export and transportation expenses in accordance with higher sales volume. Moreover, this increase was from higher vehicle depreciation expense as the residual value was reassessed at the beginning

previous year. The Company would like to clarify the reasons for the change in profits for 2017 compared to the previous year, as follows: Revenue In 2017, the Company had total revenues, as shown in its

increase of 1,700 million baht in gross profit. 3. In 2017, the Company recorded gain on change in shareholders’ equity of an associate in an amount of 1,135 million baht. It came from the issuance of 7,545

%,. The main cause was more commission income in of Q1’62, which increased by Baht 1.74 million and Gain from change in fair value of dairy cow by Baht 1.60 million. 1.4 Operational profit and net profit

134.11 14.03 Shares of gain (loss) from investments in an associate and a joint venture (1.31) 13.63 0.00 0.00 Gain from change in a joint venture proportion 0.00 (9.87) 0.00 0.00 Gain on sale of

instruments 184.90 12.08 184.90 12.08 Shares of gain (loss) from investments in an associate and a joint venture (0.43) 19.16 0.00 0.00 Gain from change in a joint venture proportion 0.00 (9.87) 0.00 0.00 Gain

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