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

ที่ กบร No. Lor Gor. 005/2020 May 14, 2020 President The Stock Exchange of Thailand Re : Clarification on the company’s over 20% change in its operating results for 1st quarter, 2020 Dear Sir, Thai

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

the auditor by March 8, 2013. Earlier, the SEC found that the company’s management prevented the auditor to obtain sufficient information and audit evidence necessary for reviewing the financial

135 participants from 135 capital market organizations.Participating organizations included securities companies, asset management companies, mutual fund brokerage companies, investment advisory service

emphasize the importance of fostering effective, transparent, and accountable management across all business sectors, while considering the benefits of stakeholders, and encouraging Thai businesses to

collaboration of capital market partners, business organization and government agencies, i.e. (1) the Stock Exchange of Thailand (SET), (2) the Federation of Thai Capital Market Organizations (FETCO), (3) the

Following the joint meeting on 2 March 2020 with the Department of Business Development under the Ministry of Commerce, the Ministry of Digital Economy and Society and the Stock Exchange of

% of net asset value in listed securities on the Stock Exchange of Thailand. Investors are permitted to deduct an actual investment amount, but not exceeding 200,000 baht, from annual assessable income