Unit : Million Baht For the 3 months Change between QoQ Change between YoY For the 6 months Change between YoY Q2/18 Q1/18 Q2/17 Amount % Amount % Jun. 18 Jun 17 Amount % Revenues from medical services

13 November 2019 Subject : Explanation of the operating results for the nine months of the year 2019, change in excess of 20% Attention: Directors and Managers the Stock Exchange of Thailand According

. Dear sir, We, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q1/2018 which changing over 20% from the same period last year as follows ; Unimit

period of last year The explanation for Company’s Operation change from same period more than 20% To : The President, The Stock Exchange of Thailand T.C.J. Asia Public Company Limited (“TCJ”) and its

financial statement as follows: Quarter 1 / year 2016 Quarter 1 / year 2017 Change Million Baht % Million Baht % Million Baht % Sales revenue - net 132.07 90.28% 108.37 92.86% -23.70 -17.95 % Revenue from

was 1.19 million Baht. The change of net profit increased, accounting for 131.26%, which exceeds 20% compared to the same period of the previous year where the loss was 3.80 million Baht. However, the

, compared with the same period last year, net profit increased 25.06 million baht, accounting for 149.3 percent. This is a change of more than 20 percent, the major reasons are as follows: The company has

, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q2/2017 which changing over 20% from the same period last year as follows ; Unimit and its

2016 Quarter 2 / year 2017 Change Million Baht % Million Baht % Million Baht % Sales revenue - net 237.96 92.26% 211.42 94.46% (26.53) -11.15 % Revenue from contract works 17.26 6.69% 9.82 4.39% (7.44

compared with net loss of Baht 7.38 million on Baht 6.81 million revenues over the same period in 2016. The change in loss for the quarterly operating result ended on June 30, 2017 is due to higher revenues