3344 Fax. 66 2 654 3323 No. PACE IR2019/001 Date: 28 February 2019 Subject: Explanation of the Operating Results for the year ended 31 December 2018 changing over 20% (Revised) To: The President The

3344 Fax. 66 2 654 3323 No. PACE IR2019/004 Date: 15 May 2019 Subject: Explanation of the Operating Results for the three-month period ended 31 March 2019 changing over 20% To: The President The Stock

3344 Fax. 66 2 654 3323 No. PACE IR2019/007 Date: 15 August 2019 Subject: Explanation of the Operating Results for the three-month period ended 30 June 2019 changing over 20% To: The President The Stock

1 Ref: AC.021/2018 14 August 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

1 Ref: AC.028/2018 13 November 2018 Subject: Management discussion and analysis of financial position and operating results To: President and Manager The Stock Exchange of Thailand Overall operating

3344 Fax. 66 2 654 3323 No. PACE IR2019/010 Date: 14 November 2019 Subject: Explanation of the Operating Results for the three-month period ended 30 September 2019 changing over 20% To: The President The

Company Limited (“the Company”) and its Subsidiary (“the Group”) would like to clarify the change in operating result for the 2nd Quarter ended 30 June 2020, which changed in revenue and net profit compared

the two languages, the Thai version shall prevail. The objective of this MD&A is to present the information and the explanation of financial status and operating results as of the date hereof. However

3,164 million1. The total investment value will not exceed USD 350 million or Baht 11,073 million1. Summary of investment structure 1 Exchange rate at Baht 31.6373 per USD 1, which is an average selling

แบบ filing baht bond (free form) ในปจจบัุน (รายละเอียดตามเอกสารแนบ 2) (ขอมูลขั้นต่ําท่ีกําหนดในมาตรา 69 และ70) D. Business overview ม.69 (6) ลักษณะการประกอบธุรกิจ E. Group Structure × F. Patents