services 633.6 100.0% 596.6 100.0% -36.9 -5.8% Costs of Sales and Service 362.4 57.2% 298.2 50.0% -64.2 -17.7% Gross Profit 271.2 42.8% 298.4 50.0% 27.2 10.0% Remark: (1) Percentage of Revenue from main

Manager The Stock Exchange of Thailand The operating performance for three-month period end 31 March 2019 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net profit

% Operating revenue 2,426.0 2,556.2 2,211.1 -8.9% -13.5% Gross profit 1,062.1 1,070.6 1,015.3 -4.4% -5.2% EBITDA 356.9 419.3 440.6 +23.5% +5.1% Net profit (loss) 131.9 140.7 118.2 -10.4% -16.0% Gross profit

net profit of Baht 13.83 million or 190.99% from the corresponding period of the previous year as the following details below: 1. Revenue from sales and services increased Baht 315.20 million or 112.48

February 28th, 2020 Subject : Clarification of the net profit of the year 2019, which has changed over 20 % in comparison to the Year 2018 To : The director of the Stock Exchange of Thailand

Mn respectively with profit margin increasing from 2.7% to 4.9% and this was an increase of THB 59.5 Mn or 121.0%. The main reasons for the increase were (1) higher revenue from sales and service (2

the third quarter ended 30 September 2018 which had been reviewed by the independent auditor as follows: Consolidated financial statements The Group reported profit attributable to owners of the Company

line with the increase in profit before income tax. Please be informed accordingly. Yours sincerely, (Assoc.Prof. Chalerm Harnphanich M.D., Hon.D.) Chief Executive Officer Revenue Structure Q3/2018 Q3

its subsidiaries for the year ended 31 December 2017 represented a profit of Baht 7.17 million. Compared to the same period of 2016, the loss was Baht 212.70 million, an increase of 103%. The Company

its subsidiaries for the nine-month period ended 30 September 2017 represented a profit of Baht 3.66 million. Compared to the same period of 2016, the loss was Baht 176.33 million, an increase of 102