faithfully, (Mr. Hiroaki Sano) Managing Director Financial Ratios Q2 2019 Q2 2018 Gross profit margin 20.7% 18.8% Net profit margin 14.3% 12.0% Debt to Equity ratio 0.10 0.10 Earnings per share 0.57 0.43 ROA

Equity Yours faithfully, Mr. Hiroaki Sano Managing Director Financial Ratios Q2 2018 Q2 2017 Gross profit margin 19.2% 20.1% Net profit margin 12.0% 8.4% Debt to Equity ratio 0.11 0.14 Earnings per share

average Total Equity Yours faithfully, Mr. Hiroaki Sano Managing Director Financial Ratios Q3 2018 Q3 2017 Gross profit margin 20.2% 17.7% Net profit margin 11.9% 7.4% Debt to Equity ratio 0.14 0.12

improvement was mostly a result of lower prices of raw materials this year and improvement of production reliability. Financial Ratios Q3 2019 Q3 2018 Gross profit margin 28.6% 20.2% Net profit margin 22.0

improvement was mostly a result of lower prices of raw materials this year. * Note Please find further information in the consolidated financial statements. 2 Financial Ratios Q1 2020 Q1 2019 Gross profit

;       3)  To revise the rules on disclosure of the financial ratios, significant financial highlight and financial covenants in the registration statement for debt securities offering and factsheet

interested in Life-Path type of provident fund, which automatically changes its investment ratios as the employees become older. In the 2nd quarter of the year 2018, statistics show that 7 investment

increase in revenue in 2019 compared with last year was due to the delivery of projects that have due date of contracts in 2019 such as USO (Phase 2), Cable Landing Station and CAT-IDC. In addition, the

amount Baht 3.69 million to be 3.35%, because the Company had decrease delivery to be 4.82%. - Immovable property business had decreasing income from last year, Baht 0.46 million near that of second

install due to heavy rain and flooding. Make delivery and installation delayed. In the fourth quarter of 2017, the Company has installed and delivered to the customers for installation and remaining 11