Operating Results of the Company in Q3/2019 Q3/18 Q3/19 9M/18 9M/19 Change +/(-) (THB million) YoY YoY Operating Revenue 251 283 13% 871 1,194 37% Gross Profit 162 181 12% 582 773 33% EBITDA 76 78 3% 237 362

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

- 2019 Balance by Quarter Change Q1–19 Q4–18 Q1–18 Q1–19 VS Q4–18 Q1–19 VS Q1–18 (Million Baht: MB) (MB) % (MB) % Total Revenue 1,266.5 1,109.5 1,044.9 157.0 14.2 221.6 21.2 Total Operating Expenses

. 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

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

reviewed by auditor are as follows: Table 1: Financial Summary for the 2nd quarter of the year 2019 and 2018 Unit: Million Baht Q2’2019 Q2’2018 Increase (Decrease) % Change Sales income 16,426.54 15,444.64

MTHB according to the change of severance payment policy following the amended Labor Protection Act. * Note Please find further information in the consolidated financial statements. 2 Summary of

Operating Results of the Company in Q2/2019 Q2/18 Q2/19 1H/18 1H/19 Change +/(-) (THB million) YoY 1H Operating Revenue 206 312 51% 405 599 48% Gross Profit 138 201 46% 273 389 42% EBITDA 49 95 94% 99 186 88

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