Ref Ref. 2S_BoD013/2019 August 14, 2019 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited (the

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

set-q1-61 (Translation) Ref.No.LEE 09/2018 May 14, 2018 Subject : Management Discussion and Analysis for the first quarter ended March 31, 2018 To : President of The Stock Exchange of Thailand We

MATI 17/2561 May 14, 2018 Subject Reporting First Quarter Consolidated Financial Statement which ended at March 31, 2018 To Director and Manager, The Stock Exchange of Thailand For three-month period

compared to Q1/2017. and increased by Baht 7.4 million when compared to Q1/2016 by Foreign exchange loss, Employee compensation And cost of public relations. Please be informed accordingly. Yours sincerely

MATI 19/2561 August 14, 2018 Subject Reporting Quarter 2 Consolidated Financial Statement which ended at June 30, 2018 To Director and Manager, The Stock Exchange of Thailand For six-month period

Ref Ref. 2S_BoD024/2018 August 14th, 2018 Subject: Clarification of the change in operating result more than 20% To : The president The Stock Exchange of Thailand 2S Metal Public Company Limited (the

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

AC 52/07-003 ACC1/18-048 November 12, 2018 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

MATI 21/2561 November 13, 2018 Subject Consolidated Financial Report for the nine-month period which ended at September 30, 2018 To Director and Manager The Stock Exchange of Thailand Nine-month