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

Thailand The operating performance for three-month period ended 31 March 2018 of Mahachai Hospital Public Company Limited was highlighted as follow: Company performance for three-month period ended 31 March

Dental Public Company Limited (LDC) would like to clarify the performance of the Company for the 3 months period ended March 31, 2018 which the details are as followed: Summary of the Company’s Performance

-Translation- M06/002/18 February 28, 2018 Subject Clarification Y2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its Subsidiaries

-Translation- M06/013/17 August 15, 2017. Subject Clarification of Q2/2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-Translation- M06/015/17 November 14, 2017 Subject Clarification of Q3/2017 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-English translation- No. M06/003/19 May 14, 2019 Subject Clarification of Q1/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-English translation- M06/006/19 August 14, 2019 Subject Clarification of Q2/2019 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-Translation- M06/010/18 August 14, 2018. Subject Clarification of Q2/2018 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its

-Translation- No. M06/011/18 November 14, 2018 Subject Clarification of Q3/2018 Company Performance To The President of the Stock Exchange of Thailand Reference MDX Public Company Limited and its