quarter of 2019 and then started to increase in first quarter of 2020 respectively. The reference prices for hot-rolled coil on the world market are that China export price average for first quarter of 2020

May 14, 2020 Reference no. RWI /BKK/018/2563 Subject : Management’s Discussion and Analysis of Business Operations of the First Quarter of 2020 To The Director and Manager of the Stock Exchange of

1 28 May 2020 Subject: Explanation of operating result in the financial statement ended 31 March 2020 To: Directors and Managers of the Stock Exchange of Thailand With reference to the audited

reference. Notification of the Securities and Exchange Commission No. KorThor. 26/2560 Re. Determination of Paid-Up Registered Capital of Licensed Operators to Undertake Derivatives Business By virtue of

translation is strictly for reference. Notification of the Office of the Securities and Exchange Commission No. Sor Jor. 63/2559 Re: Reporting of Information Disclosure of Debt Securities Issuers After Offer

reference. Notification of the Office of the Securities and Exchange Commission No. Sor Jor. 9/2559 Re: Rules and Procedures for Preparation of Factsheet __________________________ By virtue of Paragraph 2 of

reference. Notification of the Office of the Securities and Exchange Commission No. Sor Thor. 51/2561 Re: Outsourcing Function related to Business Operation to Third Party ____________________ Whereas

... (UNOFFICIAL TRANSLATION) Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for reference. The SEC Thailand can neither

reference. PAGE 2 Notification of the Securities and Exchange Commission No. Kor Thor. 8/2549 Re: Preparation and Disclosure of Financial Statements of Derivatives Business Operators By virtue of Section 9

reference. Notification of the Securities and Exchange Commission No. Kor Thor. 8/2549 Re: Preparation and Disclosure of Financial Statements of Derivatives Business Operators By virtue of Section 9 and