* Note Please find further information in the consolidated financial statements. 1 8th August, 2019 Subject: Management Discussion & Analysis (MD&A) for the 2nd quarter of 2019 Attention: The

operating performance for 30 June 2019 as the following. Key Financial Information on 30 June 2019 , 2018 (Unit : thousands) Statements of Income Separate financial statements June 30, 2019 June 30, 2018

* Note Please find further information in the consolidated financial statements. 1 7th August, 2018 Subject: Management Discussion & Analysis (MD&A) for the 2nd quarter of 2018 Attention: The

operating performance for 30 June 2018 as the following. Key Financial Information on 30 June 2018 , 2017 (Unit : thousands) Statements of Income Separate financial statements June 30, 2018 June 30, 2017

ACC1/18-042 6 September 2018 Subject : The Information of a Disposition of Assets of the Subsidiary (Revise) To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public Company

operating performance for 30 September 2018 as the following. Key Financial Information on 30 September 2018 , 2017 (Unit : thousands) Statements of Income Separate financial statements September 30, 2018

* Note Please find further information in the consolidated financial statements. 1 13th November, 2018 Subject: Management Discussion & Analysis (MD&A) for the 3rd quarter of 2018 Attention: The

* Note Please find further information in the consolidated financial statements. 1 12th November, 2019 Subject: Management Discussion & Analysis (MD&A) for the 3rd quarter of 2019 Attention: The

* Note Please find further information in the consolidated financial statements. 1 May 13th, 2020 Subject: Management Discussion & Analysis (MD&A) for the 1st quarter of 2020 Attention: The President

Company Limited wishes to clarify the Company’s operating performance for 30 June 2020 as the following. Key Financial Information on 30 June 2020 , 2019 (Unit : thousands) Statements of Income Separate