Ref. No. 132 /2560 10 August 2017 SUBJECT : 2Q/2017 reviewed financial statements and related comments. ATTN : The President Stock Exchange of Thailand Attachment : The reviewed financial statements

-Translation- M06/013/17 August 15, 2017. Subject Clarification of Q2/2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

Translation November 10, 2017 Subject: Management explanation and analysis for Quarter ended 30 September 2017 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company

Ref. No. 161/2560 13 November 2017 SUBJECT : Management Discussion and Analysis for quarter 3 ending 30 September 2017 ATTN : The President Stock Exchange of Thailand Nam Seng Insurance Plc. realized

November 14, 2017 SET-17-AC-004 Dear The President The Stock Exchange of Thailand Subject: Clarification of Result’s Operation for three months periods ended 30 September 2017 According to the

-Translation- M06/015/17 November 14, 2017 Subject Clarification of Q3/2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

Attn : The Directors and The MAI Manager Ref: Dimet AC 1802/001 February 13, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on improved Q.2’s

AC 52/07-003 ACC1/19-019 May 13, 2019 Subject: Management Discussion and Analysis Quarter 1 Ending March 31, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

-English translation- No. M06/003/19 May 14, 2019 Subject Clarification of Q1/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

หน้า 1 จาก 1 Translation August 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 June 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public