งิกบัตรำสำรทุน (Equity and Equity-Linked Instruments) หมายถึง ตราสารทุนและตราสารท่ีมีมูลค่าผกูกบัตราสารทุนหรือสินทรัพยอ์า้งอิงอ่ืนท่ีมีความเส่ียงในลกัษณะ เดียวกนักบัตราสารทุน 33 แบบฟอร์ม ณ วนัท่ี 16

Stock Exchange of Thailand Reference is made to the fact that BCP Innovation Pte. Ltd. (“BCPI”), which is the subsidiary of Bangchak Corporation Public Company Limited (“Company”), had signed an

(English Translation) Page 1 Date : 5 February 2018 Subject : Notification of the Board of Directors’ Resolution Concerning the Plan to Spin Off its Subsidiary and to List Shares on the Stock

1 / 4 No.IR.002/2018 22 February 2018 Re: Notification of the changes of the Profit and Loss Statement To: President Stock Exchange of Thailand We, T Engineering Corporation Public Company Limited

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

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

1 Translation CEN 012-2020 May 15, 2020 Subject : Management discussion and analysis for business operation Quarter 1-2020 To : The Manager and President The Stock Exchange of Thailand Summarization

October 30, 2020 Subject: The Management Discussion and Analysis for the second quarter ended June 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited (“the

November 13, 2020 Subject: The Management Discussion and Analysis for the third quarter ended September 30, 2020 To: President The Stock Exchange of Thailand Well Graded Engineering Public Company Limited

October 3, 2019 Re: Clarification of the operating results of company and its subsidiaries for the 1 st quarter of year 2018 To: President The Stock Exchange of Thailand K.C. Property Public Company