AC 52/07-003 ACC1/18-048 November 12, 2018 Subject: Management Discussion and Analysis Quarter 3 Ending September 30, 2018 To: Director and Managing Director The Stock Exchange of Thailand Qualitech

หนา้ 1 จาก 1 Translation November 13, 2019 Subject: Management explanation and analysis for Quarter ended 30 September 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe

three -month period ended March 31, 2020 Attention: President The Stock Exchange of Thailand Further to our submission of the report and the financial statements for the three-month period ended March 31

Stock Exchange of Thailand The operating performance for three-month period end of 31 March 2020 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net profit

Stock Exchange of Thailand The operating performance for three-month period end of 30 June 2020 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net loss amounting

contracts and resulting in a favorable business performance throughout the year. The Company reports the total revenue of 958.52 million THB in 2017, increased by 387.56 million THB or 67. 88% compared to the

(Translation) No. MD119/2560 August 29, 2017 Re: Clarification on the Financial Performance of the Company and its subsidiaries as of Year 2015 Attn: President The Stock Exchange of Thailand We, K. C

Director and Manager The Stock Exchange of Thailand The Company would like to report the Company’s operating result for the 1st Quarter ended March 31, 2018 that total revenue was THB8.24 million decreased

: The Director and Manager The Stock Exchange of Thailand The Company would like to report the Company’s operating result for the 2nd Quarter ended June 30, 2017 that total revenue was THB7.03 million

No. INGRS001 15 September 2017 Re: Explanation about 6-month financial performance of INGRS for the period ended 31 July 2017 To the President of the Stock Exchange of Thailand Ingress Industrial