Diligence (KYC/CDD) and credit line review practices, particularly for those clients who have traded securities under cash balance rule or inappropriately transferred their securities to raise credit limits

-Translation- Ref. IR 62/005 March 13, 2019 Subject: transaction yDisclosure of the information regarding related part To : President, The Stock Exchange of Thailand T.K.S. Technologies Public

-Translation- Ref. IR 62/005 March 13, 2019 Subject: Disclosure of the information regarding related party transaction (Additional Information) To : President, The Stock Exchange of Thailand T.K.S

(2008) R ary 2020 Notification on Director and The Stock Ex As Nation Mu No. 1/2020 o xt Vision Com uivalent to 99 rdinary share s, or equivalen e (a par value llows: According to nt to 49 perce e of Baht

., Ltd and appointment of member of audit committee. (Revised) To: President The Stock Exchange of Thailand Enclosure: Information Memorandum regarding the Acquisition of Asset of Demeter Corporation

Stock Exchange of Thailand Re: Disclosure of Information and Other Acts of Listed Companies Concerning the Acquisition and Disposition of Assets B.E. 2547 (the “Acquisition and Disposal Rule

, the securities company shall submit such financial statement via the securities company report transmission system in accordance with the rule of practice of the Office of the Securities and Exchange

company shall submit such financial statement via the securities company report transmission system in accordance with the rule of practice of the Office of the Securities and Exchange Commission on

electronic data, the securities company shall submit such financial statement via the securities company report transmission system in accordance with the rule of practice of the Office of the Securities and

and Disposal Rule”). Accordingly, the Company has a duty to disclose the information memorandum of such transactions to the Stock Exchange of Thailand and to send the information memorandum of such