12th May 2020 Subject: Management Discussion and Analysis for the three-month period ending 31st March 2020. Attention: President Stock Exchange of Thailand Please find below the additional

จดหมายชี้แจงQ160e May 15, 2017 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 31 March 2017 Summary of the 1 st Quarter

Letter_StockExchange_Nov14 November 14, 2019 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2019 Summary on

จดหมายชี้แจงQ161e May 14, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 31 March 2018 Summary of the 1 st Quarter

Attn : The Directors and The MAI Manager Ref: Dimet AC 1902/001 February 12, 2019 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.2’s performance

Attn : The Directors and The MAI Manager Ref: Dimet AC 1905/001 May 13, 2019 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.3’s performance (January

Attn : The Directors and The MAI Manager Ref: Dimet AC 2006/001 June 16, 2020 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.3’s performance (January

Writer Ref. No. 066/2562 14 May 2019 SUBJECT : Management Discussion and Analysis ending 31 March 2019 ATTN : The President Stock Exchange of Thailand The Company realized profit for the first

Writer Ref. No. 151/2561 10 August 2018 SUBJECT : Management Discussion and Analysis ending 30 June 2018 ATTN : President of the Stock Exchange of Thailand The Company realized profit for the second

, Samutprakarn 10280, Thailand Tel. 66 2323 1085..96 Fax. 66 2323 9283 (Translation) 14 May 2019 Subject: Management Discussion and Analysis (MD&A) of Q1/2019 To: Director and manager The Stock Exchange of