-English translation- M06/006/19 August 14, 2019 Subject Clarification of Q2/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

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

February 29, 2008 14 May 2018 Subject : Management discussion and analysis of financial statement for three-month period ended 31 March 2018 Attention : Director and Manager The Stock Exchange of

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

Attn : The Directors and The MAI Manager Ref: Dimet AC 0818/1 August 27, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Year End result and clarification of

AC 52/07-003 ACC1/18-048 November 12, 2018 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

Attn : The Directors and The MAI Manager Ref: Dimet AC 1811/001 November 13, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.1’s performance

writer Ref. No. 158/2562 November 13, 2019 SUBJECT : Management Discussion and Analysis ending September 30, 2019 ATTN : The President Stock Exchange of Thailand The Company realized profit for the

AC 52/07-003 ACC1/20-043 August 13, 2020 Subject: Management Discussion and Analysis Quarter 2 Ending June 30, 2020 To: The President The Stock Exchange of Thailand Qualitech Public Company Limited