entitled for subscription of new ordinary shares (Record Date) and Subscription period To: The President of the Stock Exchange of Thailand Enclosure: 1. No. For. 19/2018 Capital Increase, Waiver from

., Ltd and appointment of member of audit committee. (Revised) To: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation

Ref.No.IVL001/08/2019 8th August 2019 President The Stock Exchange of Thailand Subject: Acquisition of Integrated Oxides and Derivatives Businesses/ Assets Enclosure: Information concerning the Acquisition of

Subject : Notification for Resolution of Board of Director's Meeting No. 8/2019 regarding the Acquisition and Disposition of Assets of the Company Attention: President, The Stock Exchange of Thailand

Amount and Term of Bond Issuance, and Determination of Date of the Extraordinary General Meeting of Shareholders No.1/2018 To: The President of the Stock Exchange of Thailand Enclosure: 1. Capital Increase

size of more than 3% of net tangible assets of the Company. Therefore, the Company has the duties to disclose the information on the connected transaction to the Stock Exchange of Thailand (the "SET

Amount and Term of Bond Issuance, and Determination of Date of the Extraordinary General Meeting of Shareholders No.1/2018 (Revised No.3) To: The President of the Stock Exchange of Thailand Enclosure: 1

) To: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation Public Company Limited The Meeting of the Board of Directors No

วันที่ 10 พฤษภาคม พ -Translation- 1 Ref. LPN/SorKor/109/2561 10th May, 2018 Re: Report on Financial Analysis in Q1/2018 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co

-1 -Translation- Ref. LPN/SorKor/053/2562 14th February 2019 RE: Financial Statements Analysis Report 2018 Dear: President The Stock Exchange of Thailand L.P.N. Development Public Co., Ltd. would