ที่ - Translation - PorBor.061/2017 August 15, 2017 Subject: Clarification of operating results different from the same period last year more than 20% To: President The Stock Exchange of Thailand

1 EFORL 031/2017 August 15, 2017 Subject: Notification the waiver of subscription right to capital increase of WCI Holding Co., Ltd. To: President The Stock Exchange of Thailand Ref: Letter no. EFORL

Company have neither ability to manage finished goods (HRC) nor trade negotiation. Due to the Company had no choice but necessary to sell them just for generating income circulating used in the business

[Translation] Page 1 of 3 Ref. PDI/BK-BS-049/2019 9 August 2019 To: President The Stock Exchange of Thailand Subject: The notification of the connected transaction and the dissolution of a Subsidiary

quarter, lowering the main finished products yield. As a result, the Company needed to manage stock and volume sold through the industrial market channel, in order to not affect the volume sold through the

-TRANSLATION- 25 February 2019 Subject : Management Discussion and Analysis for 2018 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance in

-TRANSLATION- 25 February 2020 Subject : Management Discussion and Analysis for 2019 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance in

-TRANSLATION- 11 August 2017 Subject : Management Discussion and Analysis for Q2/2017 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance in

-TRANSLATION- 14 November 2017 Subject : Management Discussion and Analysis for Q3/2017 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance

-TRANSLATION- 28 February 2018 Subject : Management Discussion and Analysis for 2017 Attention : President The Stock Exchange of Thailand An overview of the results in the passing The performance in