ที่ BCH No. BCH.174/2017 15 August 2017 Subject : Explanation of the change in operating results of Q2/2017 which exceed 20% To : The President The Stock Exchange of Thailand Bangkok Chain Hospital

ที่ BCH No. BCH.211/2017 8 November 2017 Subject : Explanation of the change in operating results of Q3/2017 which exceed 20% To : The President The Stock Exchange of Thailand Bangkok Chain Hospital

Increase (Decrease) % Change Revenues from sales and services 344.69 178.62 166.07 92.97 Other revenues 3.05 1.09 1.96 179.82 Total revenues 347.74 179.71 168.03 93.50 Costs of sales and services 245.56

, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q3/2017 which changing over 20% from the same period last year as follows ; Unimit and its

. Dear sir, We, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q1/2019 which changing over 20% from the same period last year as follows ; Unimit

. (Revised) Dear sir, We, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q1/2019 which changing over 20% from the same period last year as follows

partially offset by higher sales volume of all main products as a result of stable operation. Analysis of Cost and Expenses 1. In Q3 2019, Cost of sales was 3,445 MTHB, decreased by 715 MTHB comparing to 2018

from Main Businesses 710.6 100.0% 724.1 100.0% Costs of foods and beverages 253.0 35.6% 263.5 36.7% Other operating expenses 287.1 40.4% 294.1 40.6% Costs of Sales and Service 540.1 76.0% 557.6 77.0

Analysis - Income Income Structure 2nd Quarter 2019 2nd Quarter 2018 Change (+/-) Mil.Baht % Mil.Baht % Mil.Baht % Revenues from Ferry Service - Fixed routes and schedules 149.58 81.21 155.99 81.08 (6.41

 well as attending Chinese fertility centers which is the main user group of the  subsidiary company.  The Company reported Cost of Hospital Operations (including Depreciation and  Amortization) of THB