1 Translation CEN 012-2019 May 14, 2019 Subject Management discussion and analysis for business operation Quarter 1-2019 To The Manager and President The Stock Exchange of Thailand For 3 months

., Nongeiroon, Banbueng, Chonburi, Thailand 20220 Tel. 038-160707 Fax. 033-047348 www.ndrubber.co.th No. NDR006/2019 8 August 2019 Subject: Management Discussion and Analysis (MD&A) Report for the Six-Month

WATTANAPAT HOSPITAL TRANG PUBLIC COMPANY LIMITED No. WPH – SET 8/2019 8 August 2019 Subject : Management Discussion and Analysis for Quarter 2 of 2019 ending on 30 June 2019. To : Directors and

Ref. No. 1805/025EN May 14, 2018 Subject Management Discussion and Analysis for Q1/2018 (Ending March 31, 2018) To Director and Manager of the Stock Exchange of Thailand Ubis (Asia) Public Company

1 Translation CEN 024-2018 May 15, 2018 Subject : Management Discussion and Analysis for quarter 1-2018 To : The Manager and President Business operation for 3 month period as ended March 31, 2018 of

1 10000/055/2018 20 June 2018 Subject: Notification of the Investment in OKEA AS To: Directors and Manager The Stock Exchange of Thailand Bangchak Corporation Public Company Limited (the “Company

operating results that posted a difference greater than 20% from the preceding year To: Director and Manager the Stocks Exchange of Thailand World corporation public company limited ("the Company") and its

Translation CEN 034-2018 November 13, 2018 Subject : Management Discussion and Analysis for quarter 3-2018 To : The Manager and President The Stock Exchange of Thailand Business operation for 3

-1- November 29, 2018 Subject Change of payment method for investment in acquisition and sale of tap water in some areas of Phuket and some areas of Phangnga. To Director and Manager The Stock

WATTANAPAT HOSPITAL TRANG PUBLIC COMPANY LIMITED No. WPH – SET 011/2019 14 November 2019 Subject : Management Discussion and Analysis for Quarter 3 of 2019 ending on 30 September 2019. To : Directors