No.012/2018 May 09, 2018 Subject: Report the operating result for the 1st Quarter ended March 31, 2018 and the explanation for the causes of change more than 20% in the Company’s performance To: The

2,097.62 1,600.35 Selling & Administrative Expense 127.83 116.99 Finance Costs 24.24 22.96 Net Profit 101.40 (18.95) Earnings per share (Baht) 0.25 (0.047) The company will explain the cause of change as

No.019/2017 August 11, 2017 Subject: Report the operating result for the 2nd Quarter ended June 30, 2017 and the explanation for the causes of change more than 20% in the Company’s performance To

No.024/2017 November 14, 2017 Subject: Report the operating result for the 3rd Quarter ended September 30, 2017 and the explanation for the causes of change more than 20% in the Company’s performance

No.002/2017 February 09, 2017 Subject: Report the operating result for the year ended December 31, 2017 and the explanation for the causes of change more than 20% in the Company’s performance To: The

decrease Baht 8.97 Million or 3.26%. - Cost of the sales and services from Q2/2018 was 89.50% increased to 91.75% on Q2/2019 or increased 2.25% from sales due to recorded the effect of the change severance

1 / year 2018 Change Million Baht % Million Baht % Million Baht % Sales revenue - net 108.37 92.86% 107.94 93.48% (0.42) -0.39 % Revenue from contract works 7.14 6.12% 6.40 5.54% (0.75) -10.48

1,947.37 2,097.62 Selling & Administrative Expense 120.12 127.83 Finance Costs 20.98 24.24 Net Profit 9.12 101.40 Earnings per share (Baht) 0.02 0.25 The company will explain the cause of change as follow: 1

compared with net loss of Baht 4.73 million on Baht 14.58 million revenues over the same period in 2017. The change in loss for the quarterly operating result ended on September 30, 2018 is due to lower

the sales and services from Q2/2019 was 90.29% decreased to 82.95% on Q2/2020 or decreased 7.34% from sales due to at Q2/2019 recorded the effect of the change severance pay by recognizing past services