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ที่ กบร No. Kor Bor Ror. 023/2017 August 15, 2016 President The Stock Exchange of Thailand Re : Clarification on the company’s over 20% change in its operating results for 2nd quarter, 2017 Dear Sir

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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

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Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries ("the Company") would like to clarify the operating results for the Quarter1/2020 ended March 31