จดหมายชี้แจงq262e August 14, 2019 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 June 2019 Summary on Second Quarter

จดหมายชี้แจงq261e August 14, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 June 2018 Summary on Second Quarter

จดหมายชี้แจงq361e November 12, 2018 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2018 Summary on Third Quarter

writer Ref. No. 158/2562 November 13, 2019 SUBJECT : Management Discussion and Analysis ending September 30, 2019 ATTN : The President Stock Exchange of Thailand The Company realized profit for the

three -month period ended March 31, 2020 Attention: President The Stock Exchange of Thailand Further to our submission of the report and the financial statements for the three-month period ended March 31

AC 52/07-003 ACC1/20-030 May 11, 2020 Subject: Management Discussion and Analysis Quarter 1 Ending March 31, 2020 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

Ref: SP 2020/008 Date : May 14, 2020 Subject : The Explanation to SET concerning the operating result for Q1/2020 more than 20% Attention : The Director and Manager of the Stock Exchange of Thailand

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

AC 52/07-003 ACC1/19-055 November 11, 2019 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

หน้า 1 ของ 2 (Translation) No. ACC6702/001 February 28, 2024 Subject: Clarification of operating results for the Annual Year 2023 To: The President, The Stock Exchange of Thailand Advanced Connection