results different from the same period last year more than 20% To: President The Stock Exchange of Thailand Rich Asia Corporation Public Company Limited and subsidiaries would like to clarify the results of

Page 1 of 2 May 15, 2019 Subject: Explanation of Financial Performance for the Quarter 1/2019 ended March 31, 2019 To: President, The Stock Exchange of Thailand According to the Financial Statements

Page 1 of 2 No. ACC6011/001 November 14, 2017 Subject: Explanation of Financial Performance for the Quarter 3/2017 ended September 30, 2017 To: President, The Stock Exchange of Thailand According to

The Stock Exchange of Thailand The operating performance for three-month period end 30 September 2019 of Mahachai Hospital Public Company Limited compared to the prior year was increasing in net profit

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