1 -Translation- Ref :IR 62/023 December 23, 2019 Subject: Change in Shareholding Structure of Subsidiary Company To: President, The Stock Exchange of Thailand T.K.S. Technologies Public Company

August 30th, 2019 To : Managing Director The Stock Exchange of Thailand Re : The acquisition of investment in Nan-Ram Hospital Co.,Ltd. The board of directors of Ramkhamhaeng Public Co.,Ltd. held on

report the transaction to the Stock Exchange of Thailand. Method Calculation Transaction Size (%) NTA of the invested fund X proportion of the assets acquired 1. Asset Value Method (NTA) Company’s NTA 0.00

the Stock Exchange of Thailand concerning the Acquisition and Disposition of Assets namely 1) the net tangible asset value basis 2) the net profit basis and 3) the total value of consideration basis

รายงานการประชุมคณะกรรมการตรวจสอบ ครั้งที่ 4/2548 Ref. No.: SET-2017-025 December 14, 2017 Subject: Transaction concerning Acquisition and Disposal of Assets Attn. To: President The Stock Exchange of

: President The Stock Exchange of Thailand Since the Board of Directors of Filter Vision Public Company Limited (“the Company” or “FVC”) dated December 14, 2017 resolved to approve the signing of Hi Healthcare

1 AT JSP 60/09/02 28 September, 2017 Subject Notification of the Subsidiary capital increase. To The President The Stock Exchange of Thailand The Board of Director’s Meeting No. 10/2017 of J.S.P

-Translation- Ref. No. PorBor. 029 / 2020 19 June 2020 Subject: Entering into Transaction of Disposing of Subsidiary’s Machines for the Debenture Debt repayment To: President The Stock Exchange of

Subject Notification of disposal of shares in the subsidiary (revised subject and additional content) To The President of The Stock Exchange of Thailand The Meeting of the Board of Director Meeting of

Eng_Lee PAF (Translation) LEE 06/2020 14 May, 2020 Subject : Notification on the investment in Pattana Agro Futures Company Limited (Addition) To : President of The Stock Exchange of Thailand As Lee