Material Information

1.Date of submission to the board of directors or approval by the board of directors:2024/03/05
2.Date of approval by the audit committee:2024/03/05
3.Start and end dates of financial reports or annual self-assessed financial information of the reporting period (XXXX/XX/XX~XXXX/XX/XX): 2023/01/01~2023/12/31
4.Operating revenue accumulated from 1/1 to end of the period (thousand NTD):3,625,801 5.Gross profit (loss) from operations accumulated from 1/1 to end of the period (thousand NTD):1,506,158

1.Date of occurrence of the event:2024/02/22
2.Company name:C SUN MFG. LTD.
3.Relationship with the Company (please enter ”the company itself” or
”subsidiaries”):Head office
4.Reciprocal shareholding percentage:N/A
5.Name of the reporting media:InfoTimes

1.Date of occurrence of the event:2024/02/21
2.Cause of occurrence:Request by TWSE to announce relevant information.
3.Financial and business information
4.Any matters regarding to ”Taiwan stock exchange corporation procedure for verification and disclosure of material information of companies with listed securities” article 4 that need to be specified:None

1.Date of occurrence of the event:2024/02/16
2.Company name:C SUN MFG. LTD.
3.Relationship with the Company (please enter ”the company itself” or ”subsidiaries”):Head office
4.Reciprocal shareholding percentage:N/A 5.Name of the reporting media:InfoTimes

1.Originally determined ceiling on total monetary amount of the share
repurchase (NTD):1,067,903,793
2.Originally scheduled period for the repurchase:2023/11/10~2024/01/09
3.Originally determined no.of shares to be repurchased (shares):10,000,000
4.Originally determined repurchase price range (NTD):33.00~67.00
5.Actual period of the current repurchase:2023/11/10~2024/01/09