expenses increased slightly by only 0.15% from Baht 389.26 million in Q1 2020 to Baht 389.86 million in Q1 2021. Core operating profit (defined as Earnings before Interests and Taxes exclude interest income

ended 31 December 2018, which net profit has changed more than 20% from the last year as follows: Statement of Comprehensive Income Unit: Million Baht 31 December 2018 31 December 2017 Increased

June 2020, which net profit has changed more than 20% from the last year as follows: Statement of Comprehensive Income Unit: Million Baht 30 June 2020 30 June 2019 Increased (Decreased) Percentage Remark

ended 30 September 2019, which net profit has changed more than 20% from the last year as follows: Statement of Comprehensive Income Unit: Million Baht 30 September 2019 30 September 2018 Increased

- Testing and Inspection 13.89 13.12 0.77 5.87% 3 Cost of sales and services (442.04) (406.41) 35.63 8.77% Gross Profit 43.73 30.54 13.19 43.21% Other income 3.89 3.28 0.61 18.51% 4 Profit before expenses

) -7.0% -0.5% -6.3% Operating profit 117.60 14.1% 108.54 13.5% 102.99 13.2% -5.1% -12.4% Other income 59.99 7.2% 67.76 8.4% 68.61 8.8% 1.3% 14.4% Sales profit 0.87 0.1% 0.02 0.0% 0.06 0.0% 200.0% -93.1

performance of the Group Unit: Million Baht 3Q17 3Q16 Increase (decrease) Variance (%) Total revenues 1,850 1,362 488 36% Net profit 54 95 (41) (43%) The Group has total revenues of Baht 1,850 million for 3Q17

13.6% 0.6% -5.6% 465.67 14.0% 430.79 13.7% -7.5% Other income 64.20 7.8% 68.61 8.8% 68.50 9.0% -0.2% 6.7% 252.72 7.6% 271.21 8.6% 7.3% Sales profit 0.26 0.0% 0.06 0.0% 0.19 0.0% 216.7% -26.9% 1.65 0.1

performance of the Group Unit: Million Baht 2Q17 2Q16 Increase (decrease) Variance (%) Total revenues 1,910 1,307 603 46% Net profit 116 89 27 30% The Group has total revenues of Baht 1,910 million for 2Q17

ended 30 September 2018, which net profit has changed more than 20% from the last year as follows: Statement of Comprehensive Income Unit: Million Baht 30 September 2018 30 September 2017 Increased