1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company (edit no.2 ) To: President, The Stock Exchange of Thailand T.K.S. Technologies Public

Search The Securities and Exchange Commission, Thailand About Us Our Roles Our Structure SEC Board ​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Capital Market Supervisory Board SEC Executives Organization Chart

AC 52/07-003 ACC1/20-030 May 11, 2020 Subject: Management Discussion and Analysis Quarter 1 Ending March 31, 2020 To: Director and Managing Director The Stock Exchange of Thailand Qualitech Public

Stock Exchange of Thailand The operating performance for three-month period end of 31 March 2020 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net profit

Stock Exchange of Thailand The operating performance for three-month period end of 30 June 2020 of Mahachai Hospital Public Company Limited compared to the prior year was decreasing in net loss amounting

Exchange Act B.E.2535 . Preliminary version: incomplete and/or being reviewedinformation. Revised version: new report submitted by the reporter to replace theold one. Chain principle: indirect acquisition of

Exchange Act B.E.2535 . Preliminary version: incomplete and/or being reviewedinformation. Revised version: new report submitted by the reporter to replace theold one. Chain principle: indirect acquisition of

Exchange Act B.E.2535 . Preliminary version: incomplete and/or being reviewedinformation. Revised version: new report submitted by the reporter to replace theold one. Chain principle: indirect acquisition of

Exchange Act B.E.2535 . Preliminary version: incomplete and/or being reviewedinformation. Revised version: new report submitted by the reporter to replace theold one. Chain principle: indirect acquisition of

Exchange Act B.E.2535 . Preliminary version: incomplete and/or being reviewedinformation. Revised version: new report submitted by the reporter to replace theold one. Chain principle: indirect acquisition of