No. CAZ 002/2019 26 February 2019 Subject: Management Discussion and Analysis Year ended 31 December 2018 Attention: The President The Stock Exchange of Thailand CAZ (Thailand) Public Company Limited

than the original liquidity management invested in bank deposits or short-term funds that the company has invested. In the past, the Company has invested in bank deposit with return rate of approximately

หน้า 1 จาก 1 Translation May 8, 2018 Subject: Management explanation and analysis for Quarter ended 31 March 2018 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

หน้า 1 จาก 1 Translation February 22, 2019 Subject: Management explanation and analysis for Year ended 31 December 2018 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

showed in the corresponding period last year, or 26.53% increased. The increment was in accordance with company’s expanding strategy and well management in marketing and sales; therefore, company’s

Translation August 9, 2017 Subject: Management explanation and analysis for Quarter ended 30 June 2017 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company Limited

November 14, 2017 Subject : Management Discussion and Analysis of 3rd quarter ended September 30, 2017 Attention : President The Stock Exchange of Thailand Operating Performance . Revenues Three

the meeting’s resolutions in the following manners: Appointment of the audit committee/Renewal for the term of audit committee: Chairman of the audit committee Member of the audit committee As follows

Letter_StockExchange_Nov14 November 14, 2019 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 30 September 2019 Summary on

Microsoft Word - MD&A Q1 2019_EN_Revised (Final).docx OHTL Public Company Limited and its subsidiaries Management Discussion and Analysis for the first quarter ended 31 March 2019 (Unit: Thousand