margins for each business segment are shown below: Net Profit Margin (to Total Revenue) 2019 2018 Manufacturing and Selling of Special Cutting Tools Segment 5.29% 27.37% Importing and Selling of Cutting

Profit Margin (%) 2.40 2.35 3.18 Current Ratio (Times) 1.43 1.43 1.51 Debt to Equity Ratio (Times) 1.79 1.81 1.48 Book Value per Share (Baht) 2.22 2.25 2.39 Net Profit per Share (Baht) 0.45 0.43 0.57

28.12 Net Profit Margin (%) 2.35 3.18 3.68 Current Ratio (Times) 1.43 1.51 1.29 Debt to Equity Ratio (Times) 1.81 1.48 1.83 Book Value per Share (Baht) 2.25 2.39 2.56 Net Profit per Share (Baht) 0.43 0.57

as mentioned above and lower Gross Profit Margin from 36.1% in Q1/ 2019 to 35.1 % in Q1/2020 as a result of a higher related freight charges added to production costs; - SG&A including Interest

lower Gross Profit Margin from 34.9 % in Q2/2019 to 34.3 % in Q2/2020 resulting from a higher related freight charges added to production costs and an unfavorable product mix; - SG&A including Interest

revenue respectively (compared to 7.69% and 5.52% in the previous year). Net profit margins for each business segment are shown below: Net Profit Margin (to Total Revenue) 2020 2019 Manufacturing and

six-month period of gross profit margin in 2020 and 2019 are similar at 31.73% and 29.06%, respectively. As a result of operating income for the six-month period ended June 30, 2020 the company’s loss

654 3344 Fax. 66 2 654 3323 Gross Profit Margin Gross profit margin of the property development business decreased from the previous year from 23.9% to 10.4 from sale promotion of the condominium units

25.51 Net Profit Margin (%) 2.35 3.18 3.55 Current Ratio (Times) 1.43 1.51 1.28 Debt to Equity Ratio (Times) 1.81 1.48 1.76 Book Value per Share (Baht) 2.25 2.39 2.39 Net Profit per Share (Baht) 0.43 0.57

Q1/2020 ended March 31, 2020 of the Company and its subsidiaries, as shown below: (Unit : Thousand Baht) Q1/2020 Q1/2019 Change %Change Revenue 212,967 236,732 (23,765) (10.04%) Gross profit margin