NOTIFICATION OF THE SECURITIES AND EXCHANGE COMMISSION (Translation) Readers should be aware that only the original Thai text has legal force and that this English translation is strictly for

revenue ratio decreased by 4.42% (from 92.05% to 87.63%) because the improvement of production efficiency. 3. Profit from foreign exchange increased by 28.91 million baht (from the loss of 5.47 million baht

period last year. 2. Sales cost to revenue ratio decreased by 1.07 % (from 91.04 % to 89.97 % ) because the improvement of production efficiency. 3. Profit from foreign exchange increases by 10.87 million

จดหมายชี้แจงQ160e May 15, 2017 The Managing Director The Stock Exchange of Thailand Subject : Management Discussion and Analysis for three month Ending 31 March 2017 Summary of the 1 st Quarter

หนา้ 1 จาก 1 Translation May 13, 2020 Subject: Management explanation and analysis for Year ended 31 March 2020 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public Company

and Manager The Stock Exchange of Thailand The operating performance for three-month period ended 30 September 2017 of Mahachai Hospital Public Company Limited was highlighted as follow: 1. Company

หน้า 1 จาก 1 Translation February 19, 2020 Subject: Management explanation and analysis for Year ended 31 December 2019 Attn: The Managing Director, the Stock Exchange of Thailand Pacific Pipe Public

Exchange of Thailand The operating performance for three-month period ended 31 March 2017 of Mahachai Hospital Public Company Limited was highlighted as follow: Company performance for three-month period

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

(Translation) LEE 12/2019 11 November 2019 Subject : Management Discussion and Analysis for the third quarter ended September 30, 2019 To : President of The Stock Exchange of Thailand We submit