24th February 2019 Subject: Management Discussion and Analysis for the Year Ending 31st December 2019 Attention: President Stock Exchange of Thailand Please find below the additional information

-Translation- NO. ED-MD2020-0004 February 24th, 2020 Subject: Clarification of changes in excess of 20% in the operating results for year ended 2017 To: Director and General Manager The Stock

(Translation) IR 003/20 February 28, 2020 President and Director The Stock Exchange of Thailand Subject : To explain the

จดหมายชี้แจงQ160e May 15, 2017 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 31 March 2017 Summary of the 1 st Quarter

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

SN.LK.031/2017 August 10, 2017 Subject : Management Discussion and Analysis for the 2nd quarter of 2017 Attn : The President The Stock Exchange of Thailand Indara Insurance Public Company Limited

: The Director and Manager The Stock Exchange of Thailand The Company would like to report the Company’s operating result for the 2nd Quarter ended June 30, 2017 that total revenue was THB7.03 million

Manager of The Stock Exchange of Thailand Union Petrochemical Public Company Limited and its subsidiaries would like to describe and analyze the financial situation and business operation for Quarter 2/2017

SN.LK.037/2017 November 9, 2017 Subject : Management Discussion and Analysis for the 3rd quarter of 2017 Attn : The President The Stock Exchange of Thailand Indara Insurance Public Company Limited

2017 Attention President The Stock Exchange of Thailand K.C. Metalsheet Public Company Limited (“the Company”) would like to clarify the operating result of the financial statement as follows: Quarter 3