1 / 3 No.IR.003/2019 28 February 2019 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

WIIK and its subsidiaries for the three-month period ended March 31, 2019 as follows. Summarized of the Statement of income Unit : million Baht Quarter 1/2019 Quarter 1/2018 Changed (%) Income from sale

period ended 31 March 2019 which has been reviewed by the Auditor. The overall of the Company’s performance can be summarized as follows: Performance (Income Statement) Q1.2562 Q1.2561 Increase/(decrease

WIIK and its subsidiaries for the three-month period ended June 30, 2019 as follows. Summarized of the Statement of income Unit : million Baht Quarter 2/2019 Quarter 2/2018 Changed (%) Income from sale

period ended 30 June 2019 which has been reviewed by the Auditor. The overall of the Company’s performance can be summarised as follows: Performance (Income Statement) Q2.2019 Q2.2018 Increase/(decrease

the six-month period ended 30 June 2019 which has been reviewed by the Auditor. The overall of the Company’s performance can be summarised as follows: Performance (Income Statement) Q2.2019 Q2.2018

WIIK and Subsidiary Summarized of the Statement of income Unit : million Baht Quarter 1/2018 Quarter 1/2017 Changed (%) Incomes from sale and installation of the pipeline 248.60 285.42 (12.90) Incomes

Connected Transactions B.E. 2546 (as amended). Moreover, according to the Company’s latest consolidated financial statement ended March 31, 2018, the total transaction size of acquisition of ordinary shares

B.E.2546 (2003). NTA Calculation and Transaction Size Items Detail Financial Statement as of 31 Mar 2018 Assets (Baht) – (1) 2,508,485,000 Liabilities (Baht) – (2) 1,539,976,000 Intangible Asset (Baht

shareholder. NTA Calculation and Transaction Size Items Detail Financial Statement as of 31 Mar 2018 Assets (Baht) – (1) 2,508,485,000 Liabilities (Baht) – (2) 1,539,976,000 Intangible Asset (Baht) – (3