not a significant difference. 1.3 Cost of services Unit : Million Baht March 31, 2020 March 31, 2019 Increase (Decrease) Amount % Dentist remuneration 54.11 55.47 (1.36) (2.44) Rental of office and

Unit : Million Baht For the 3 months Change between YoY For the 6 months Change between YoY Q2/20 Q2/19 Amount % Q2/20 Q2/19 Amount % Dentist remuneration 29.73 58.64 (28.91) (49.29) 83.85 114.11 (30.26

% mainly due to increasing dentist remuneration, rental expense, depreciation-medical equipment and incentive by Baht 9.44 million, Baht 1.63 million, Baht 1.65 million and Baht 1.99 million, respectively

year by Baht 18.14 million or equivalent to 6.69 % mainly due to increasing dentist remuneration, rental expense and depreciation-medical equipment by Baht 15.15 million, Baht 2.82 million and Baht 2.82

(Decrease) Amount % Dentist remuneration 55.47 51.01 4.46 8.74 Rental of office and branches 13.08 13.27 (0.19) (1.43) Employees’ salaries of branches 16.86 14.26 2.59 18.17 Depreciation 5.04 5.27 (0.23

) Dec. 31, 19 Dec. 31, 18 Amount % Dentist remuneration 236.14 221.91 14.22 6.41 Rental of office and branches 51.57 52.71 (1.15) (2.18) Employees’ salaries of branches 70.10 64.29 5.81 9.04 Depreciation

year 2016 by Baht 28.25 million or equivalent to 7.80%, mainly due to increasing dentist remuneration, rental expense and depreciation-medical equipment by Baht 23.88 million, Baht 3.44 million and Baht

quarter of prior year by Baht 6.88 million or equivalent to 7.42%, mainly due to increasing dentist remuneration, rental expense, laboratory expense and employee expense by Baht 5.10 million, Baht 0.42

June 30, 2018 Amoun % Dentist remuneration 58.64 54.56 4.08 7.48 114.11 105.56 8.55 8.10 Rental of office and branches 13.28 13.30 (0.02) (0.15) 26.36 26.57 (0.21) (0.79) Employees’ salaries of branches

Items For the 3 months Change between YoY For the 9 months Change between YoY Q3/19 Q3/18 Amoun % Sep. 30, 2019 Sep. 30, 2018 Amoun % Dentist remuneration 62.09 57.83 4.26 7.37 176.20 163.39 12.81 7.84