วันที่ 14 สิงหาคม 2550 DEMCO Public Company Limited No. Demco AC001/2019 February 28, 2019 Subject : The company’s operating result of the year 2018 To : The president, The Stock Exchange of Thailand

Palmer & Turner (Thailand) Ltd MJD.IR.003/2562 28 February 2019 Subject : Clarification of the operating result for the year 2018 ended December 31, 2018 To : Director and Manager The Stock Exchange

analysis for the three-month period ended June 30, 2019 To: Director and Manager of the Stock Exchange of Thailand Referring to the submission of reviewed financial statements for quarter 2/2019 of Wiik

: Interim Analysis and Explanation of the Management To: Directors and Managers The Stock Exchange of Thailand Short-term loan from directors As of June 30, 2019, the company had a short-term loan from

Ref. PDI/BK-BS-056/2018 8th August 2018 Re: Management Discussion and Analysis (MD&A) For the 2Q 2018 and 1H 2018 To: President The Stock Exchange of Thailand Due to depletion of Mae Sod Mine’s

Ref. PDI/BK-BS-076/2018 7th November 2018 Re: Management Discussion and Analysis (MD&A) For the three-month and nine-month periods ended September 30, 2018 To: President The Stock Exchange of

2019 To : The President The Stock Exchange of Thailand Bangkok Chain Hospital Public Company Limited (the “Company”) would like to report the operating results of the Company and its subsidiaries

November 12, 2004 1/3 No: SN. 130/2019 21 November 2019 Subject: Clarification of Operating Results and Financial Position of the year ended September 30, 2019 Attention: President The Stock Exchange

IDH-AC-000-อส6302/30.00 20 February 2020 Re: Management Discussion and Analysis Operating results for the year ended 31 December 2019 To: President The Stock Exchange of Thailand Overview of the

(Ending September 30, 2019) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company Limited (“the Company”) would like to clarify on the performance and the financial for Q3