Bangchak Corporation Plc. Management Discussion & Analysis of Business Operation For the first quarter ended March 31st, 2019 Management Discussion and Analysis of Business Operation for Q1/2019

1 Zen Corporation Group Public Company Limited 662 Soi Onnuch 17, Suanluang, Bangkok 10250 THAILAND. Tel: 02-0195000 24 February 2020 No. ZEN 2563-003 Subject Management Discussion and Analysis for

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the shares on the Stock Exchange of Thailand. The Company has consistently provided information and facts relating to the nature of the business including the operational outcome of LRT to the public

(unit: THB million) 2019 (2nd Quarter) Percentage 2018 (2nd Quarter) Percentage associate Management benefit expenses (8.67) (113.63) (9.84) (1,929.41) Financial cost (0.08) (1.05) (0.10) (19.61) Share of

impairment of investments in associate (0.01) (0.05) (1.64) (268.85) Management benefit expenses (11.30) (58.89) (14.16) (2,321.31) Financial cost (0.12) (0.63) (0.14) (22.95) Share of loss in associates

DCORP 025/2020 May 13, 2020 Subject: Management Discussion and Analysis – Explanation of net profit for the quarter ended March 31, 2020 and the increase in the overall operations of more than 20 percent

1 Ref. No. IVL 006/11/2017 9 Nov 2017 The President The Stock Exchange of Thailand Subject: Submission of Quarterly Reviewed Financial Statements and the Management Discussion and Analysis of

DCORP 041/2020 August 13, 2020 Subject Management Discussion and Analysis – Explanation of net profit for the quarter ended June 30, 2020 and the increase in the overall operations of more than 20 percent