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

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

Attn : The Directors and The MAI Manager Ref: DIMET AC 1911/001 November 14, 2019 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q.1’s performance

management. The business provider must have the protective measures against conflicts of interests, for the increased protection for the investors.SEC has published relevant documents regarding public

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