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

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

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

AC 52/07-003 ACC1/20-043 August 13, 2020 Subject: Management Discussion and Analysis Quarter 2 Ending June 30, 2020 To: The President The Stock Exchange of Thailand Qualitech Public Company Limited

August 14, 2019 Subject: Managing Discussion and Analysis for Q2/2019 To: Managing Director The Stock Exchange of Thailand The company would like to report to operation results for the company and

) Attention President The Stock Exchange of Thailand K.C. Metalsheet Public Company Limited (“the Company”) would like to clarify the operating result of the financial statement as follows: year 2016 year 2017

2017 Attention President The Stock Exchange of Thailand K.C. Metalsheet Public Company Limited (“the Company”) would like to clarify the operating result of the financial statement as follows: Quarter 3

President The Stock Exchange of Thailand K.C. Metalsheet Public Company Limited (“the Company”) would like to clarify the operating result of the financial statement as follows: year 2016 year 2017 Change

Today, SEC and organizations in the capital market – namely, the Stock Exchange of Thailand Group, the Federation of Thai Capital Market Organizations (FETCO), the Association of Securities

Ref: VNT-CPR-2012 Ref: VNT-CPR-2017.058 30 November 2017 Subject: Resolution of Vinythai Board of Directors' Meeting No.7/2017 on connected transaction Attn: President, the Stock Exchange of Thailand