Manager The Stock Exchange of Thailand The operating performance for three-month period end 30 June 2019 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net profit

Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries would like to describe and analyze the financial situation and business operation for Quarter 1/2018

set-q1-61 (Translation) Ref.No.LEE 09/2018 May 14, 2018 Subject : Management Discussion and Analysis for the first quarter ended March 31, 2018 To : President of The Stock Exchange of Thailand We

MATI 17/2561 May 14, 2018 Subject Reporting First Quarter Consolidated Financial Statement which ended at March 31, 2018 To Director and Manager, The Stock Exchange of Thailand For three-month period

August 10, 2018 Subject : Management Discussion and Analysis of Business Operation results for Quarter 2/2018 To : Director and Manager of The Stock Exchange of Thailand U nion Petrochemical Public Company

set-q2-61 (Translation) LEE 10/2018 14 August 2018 Subject : Management Discussion and Analysis for the second quarter ended June 30, 2018 To : President of The Stock Exchange of Thailand We submit

MATI 19/2561 August 14, 2018 Subject Reporting Quarter 2 Consolidated Financial Statement which ended at June 30, 2018 To Director and Manager, The Stock Exchange of Thailand For six-month period

-Translation- M06/010/18 August 14, 2018. Subject Clarification of Q2/2018 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

results for Quarter 3/2018 To : Director and Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries would like to describe and analyze the financial

MATI 21/2561 November 13, 2018 Subject Consolidated Financial Report for the nine-month period which ended at September 30, 2018 To Director and Manager The Stock Exchange of Thailand Nine-month