Managing Director of Accounting and Finance, and the disposition of land of the Company’s subsidiary To President The Stock Exchange of Thailand K.C. Property Public Company Limited (the “Company”) would

1 / 2 IR.022/2017 13 November 2017 Re: Clarification on the changes of Profit and Loss Statement To President The Stock Exchange of Thailand T Engineering Corporation Public Company Limited (the

- No. LMJG/SET/2020/019 August 10th, 2020 Subject: Clarification for the change of Operating Results more than 20% Attention: The President The Stock Exchange of Thailand Effects of the COVID-19

Manager The Stock Exchange of Thailand According to the resolution of the meeting of the Board of Directors No.3/2018 of Wattanapat Hospital Trang Public Company Limited (“the Company”) held on 8 May 2018

1/2 RC 12/19 7 May 2019 Subject : Report on the Company’s operating results for the first quarter of the year 2019 Attention : President of the Stock Exchange of Thailand The Board of Directors

Ref: No 18/2005 Ref: No 32/2019 June 27, 2019 Subject : Promissory note from connected persons and granting financial assistance To : The President The Stock Exchange of Thailand The Board of

August 14, 2019 Subject : Management Discussion and Analysis for Six-month and 2nd quarter ended June 30, 2019 Attention : President The Stock Exchange of Thailand 1. Operating Performance 1.1

MD & A งบปี -62 _หลังสอบทาน__EN Subject : Management Discussion and Analysis (reviewed) To : Director and Manager The Stock Exchange of Thailand Ratchthani Leasing Public Company Limited would like

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

The Stock Exchange of Thailand Enclosure: Information Memorandum on the Asset Disposal, Schedule 1 of Rich Asia Corporation Public Company Limited Reference to the Board of Directors’ meeting of Rich