. (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

for Epichlorohydrin from the weak Epoxy demand. Analysis of Cost and Expenses 1. In Q2 2019, Cost of sales was 3,696 MTHB, increased by 292 MTHB comparing to 2018 or 8.6% due to higher sales volume

1,219.38 -172.72 -14.16% 924.23 1,102.97 -178.74 -16.21% Cost of sales and services -802.17 -898.29 -96.12 -10.70% -735.52 -829.22 -93.70 -11.30% Gross Profit 244.49 321.09 -76.60 -23.86% 188.71 273.76

ที่ - Translation - PorBor. 018 / 2018 May 15, 2018 Subject: Clarification of operating results change from the same period last year by more than 20% To: President The Stock Exchange of Thailand

IPD which posted 28% growth yoy due to epidemics, weather change as well as increasing number of beds in service. Cost of Hospital Operations Cost of hospital operations in 2Q’18 and 1H18 increased by

result. Dear sir, We, Unimit Engineering Public Company Limited (UEC) , would like to clarify the change in operating result for Q3/2018 which changing over 20% from the same period last year as follows

the improved selling price across all products, especially for Epichlorohydrin (“ECH”) caused by limited export from China and PVC from better market condition. Analysis of Cost and Expenses 1. In Q3

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

ที่ กบร No. Lor Gor. 023/2020 November 16, 2020 President The Stock Exchange of Thailand Re : Clarification on the company’s over 20% change in its operating results for 3rd quarter, 2020 Dear Sir

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