(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD17-033 13 th November 2017 Subject: Clarification of changes in excess of 20% in the operating results for Q3/2017 To : Director

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD18-004 26th February 2018 Subject : Clarification of changes in excess of 20% in the operating results for year ended 2017 To

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD19-007 14th May 2019 Subject : Clarification of changes in excess of 20% in the operating results for year Q1/2019 To : Director

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD19-015 9th August 2019 Subject : Clarification of changes in excess of 20% in the operating results for year Q2/2019 To : Director

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD18-014 14th August 2018 Subject : Clarification of changes in excess of 20% in the operating results for year Q2/2018 To : Director

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD18-019 12th November 2018 Subject : Clarification of changes in excess of 20% in the operating results for year Q3/2018 To

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 1 -Translation- No. ED-MD19-023 13th November 2019 Subject : Clarification of changes in excess of 20% in the operating results for year Q3/2019 To

(Auto 11 Lines) Fax: +66(0)2-192-3744 Page 1 of 2 -Translation- No. ED-MD19-002 28th February 2019 Subject : Clarification of changes in excess of 20% in the operating results for year ended 2018 To

year, the Company has not yet earned income from Excellence Center (New Building) planned to official grand opening in the following year of February 2018) along with the enlarged customer base of the

comprehensive profit (loss) at an increase of 119.58 percent, which is more than twenty percent. The company would like to explain the reasons for the aforementioned changes in performance with the following key