Name of Acquisitor/Dispositor Search by Date   Transaction Date     Published Date   Date From To   Reports on Acquisition or Disposition of Securities (Form 246-2) ( 6 record(s) found) Name of

Issuer Name of Acquisitor/Dispositor Search by Date   Transaction Date     Published Date   Date From To   Reports on Acquisition or Disposition of Securities (Form 246-2) ( 6 record(s) found) Name of

Issuer Name of Acquisitor/Dispositor Search by Date   Transaction Date     Published Date   Date From To   Reports on Acquisition or Disposition of Securities (Form 246-2) ( 11 record(s) found) Name of

02 654 3344 โทรสาร 02 654 3323 ทะเบยีนเลขที ่0107554000232 No.: PACE-L 36/2018 Date: 21 December 2018 Subject: Disclosure on Connected Transaction Regarding Providing Financial Assistance Attention

AC 52/07-003 ACC1/19-056 11 November 2019 Subject : The Purchase of the Ordinary Shares of Duwell Intertrade Co., Ltd. To: Director and Managing Director The Stock Exchange of Thailand Qualitech

Acquisition/ Disposition Transaction Date % Group of Held Before Acquisition/ Disposition 2 % Group of Held Acquisition/ Disposition 2 % Group of Held After Acquisition/ Disposition 2 Remark 3 File No JTS Mr

of the Stock Exchange of Thailand entitled Disclosure of Information and Other Acts of Listed Companies Concerning the Connected Transactions B.E. 2546 ( “Connected Transaction Rules"), and its

[Translation] Page 1 of 2 Ref. PDI/BK-BS-044/2017 8 August 2017 To : President The Stock Exchange of Thailand Re. : Resolutions of the Board of Directors’ Meeting, No. 03-2017 The Board of Directors

[Translation] Page 1 of 2 Ref. PDI/BK-BS-048/2017 18 August 2017 To : President The Stock Exchange of Thailand Re. : Invest in Short Bill of Exchange in Thai Baht currency with specified the

Page 1 of 2 No. ACC1903/001 March 1, 2019 Subject: Approval to enter into Contract to sell of Common Stock To: President The Stock Exchange of Thailand According to the Board of Director’s Meeting No