November 8, 2017 Reference no. RWI /RY/061/2560 Subject : Management’s Discussion and Analysis of Business Operations of the Third Quarter of 2017 Dear The Director and Manager of the Stock Exchange

- Translation - 22 February 2018 Subject: Management’s Discussion and Analysis for the Operating Results of the Year 2017 Attention: The President of the Stock Exchange of Thailand Exotic Food Public

1 28 May 2018 Subject: Explanation of operating result in the financial statement for the year ended 31 March 2018 To: President The Stock Exchange of Thailand With reference to the financial

1 11 February 2019 Subject: Explanation of operating result in the financial statement ended 31 December 2018 To: President of the Stock Exchange of Thailand With reference to the financial statement

MD & A_Q2_63 August 11, 2020 Subject : Management Discussion and Analysis for the second quarter ended 30 June 2020 (reviewed) To : Director and Manager The Stock Exchange of Thailand Ratchthani

ACC1/19-007 February 18, 2019 Subject: Management Discussion and Analysis for the year ended December 31, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

ACC1/20-012 February 25, 2020 Subject: Management Discussion and Analysis for the year ended December 31, 2019 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

Ref. No. 132 /2560 10 August 2017 SUBJECT : 2Q/2017 reviewed financial statements and related comments. ATTN : The President Stock Exchange of Thailand Attachment : The reviewed financial statements

จดหมายชี้แจงq260e August 15, 2017 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 June 2017 Summary on Second Quarter

Translation November 10, 2017 Subject: Management explanation and analysis for Quarter ended 30 September 2017 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company