Attn : The Directors and The MAI Manager Ref: Dimet AC 0817/1 August 30, 2017 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 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

วันที่ 11 กุมภาพันธ์ 2551 Ref: Dimet AC 1805/001 May 14, 2018 Attention: The Directors and The MAI Manager The Stock Exchange of Thailand Subject: Report on Q3’s performance Dear Sir, We would like

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

increased to 14.8% when compare to the same period of 2016 which gross profit margin was 11.73%. Due to price of the raw material in stock was lower than the average market price. 3. Selling expenses was Baht

Ref: ACC6405/001 March 12, 2021 Subject Clarification of the operating results for the quarter 1/2021 ended March 31, 2021 Attention: Director and Manager The Stock Exchange of Thailand According to

Page 1 of 3 No. ACC6411/003 November 11, 2021 Subject: Clarification of the operating results quarter 3/2021 of the year ended September 30, 2021 Attention : Director and Managing Director, The Stock

the previous quarterly To: The President The Stock Exchange of Thailand Thailand's economic outlook for the year 2018 is likely to be bright. After seeing a clear recovery in the last quarter of last

previous year To: The President The Stock Exchange of Thailand Thailand's economic outlook for the year 2018 is likely to be bright. After seeing a clear recovery in the last quarter of last year, private

May 12, 2018 Subject : Management Discussion and Analysis for quarter ended March 31, 2018 Attention : President The Stock Exchange of Thailand 1. Operating Performance . Revenues (Thousands Baht