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

Ref: VNT-CPR-2012 Ref: VNT-CPR-2017.058 30 November 2017 Subject: Resolution of Vinythai Board of Directors' Meeting No.7/2017 on connected transaction Attn: President, the Stock Exchange of Thailand

. Suppaluek Na Songkla, Mr. Ittidet Phonin and Miss Nittaya Na Songkla offered company to buy SUTG stock for 132,000 units whereas 66% of total paid-up capital of SUTG. Main reason of the deal is to come back

26th February 2020 Subject: Transaction to acquire land from a related party. To: President The stock Exchange of Thailand According to the resolution of Board of Directors meeting of S.Kijchai

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

the shareholding in subsidiary companies To: President The Stock Exchange of Thailand Attachment: 1. Structure of the shareholding in subsidiary companies 2. Information on the Connected Transaction of

1 No. CC20171103ELE November 13, 2017 Subject Report of the Resolutions of Board of Directors’ Meeting No. 5/2017 To President The Stock Exchange of Thailand The Board of Directors’ meeting of Cal

lease office space for the Company and its subsidiaries. To : President The Stock Exchange of Thailand JCK International Public Company Limited (“the Company”) would like to notify that the Board of

sale of 48.99 percent of the ordinary shares of WIE, the sole subsidiary of WORLD, to NAUTIC, which is a listed company on Catalist* under the Stock Exchange of Singapore. NAUTIC is a related party of

eliminating obstacles for issuing companies while maintaining proper protection and fairness in allotment of securities for investors. Also, rules on prevention of conflict of interest arising from securities