หน้า 1 จาก 1 Translation February 19, 2020 Subject: Management explanation and analysis for Year ended 31 December 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

หน้า 1 จาก 1 Translation May 10, 2019 Subject: Management explanation and analysis for Quarter ended 31 March 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

หนา้ 1 จาก 1 Translation November 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 September 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe

IDH-AC-000-อส6302/30.00 20 February 2020 Re: Management Discussion and Analysis Operating results for the year ended 31 December 2019 To: President The Stock Exchange of Thailand Overview of the

หนา้ 1 จาก 1 Translation May 13, 2020 Subject: Management explanation and analysis for Year ended 31 March 2020 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company

AIM 1 Ref.: EFORL IR 043/2018 November 14, 2018 Subject: Management Discussion and Analysis for the third quarter of 2018 (Q3/2018) and for nine month periods ended September 30, 2018 To President

Management Discussion and Analysis for the second quarter ended June 30, 2019 Attention The President The Stock Exchange of Thailand Attachment Report and interim financial statement for the second quarter

the increase in the gross profit margin that expanded from 14.5% in the second quarter of 2018 to 16.5% in the second quarter of 2019 and more efficient cost management that caused selling and

Management Discussion and Analysis for the third quarter ended September 30, 2019 Attention The President The Stock Exchange of Thailand Attachment Report and interim financial statement for the third quarter

Management Discussion and Analysis for the Year 2017 Business Overview Business overview of One to One Contacts Public Company Limited and its subsidiaries (“the Group”) for the year 2017 compared to