Material Information

1.Date of the resolution of the board of directors or shareholders meeting:2024/05/09
2.Type and monetary amount of original dividend distribution: In the fiscal year 2023 of our company, cash dividends totaling NT$447,727,044 were distributed, with a dividend of NT$3 per share.
3.Type and monetary amount of dividend distribution after the change: As of May 9, 2024, the total outstanding shares of our company amounted to 149,742,348 shares. We distributed cash dividends totaling NT$449,227,044, equivalent to NT$3 per share.

1.Date of submission to the board of directors or approval by the board of directors:2024/05/09
2.Date of approval by the audit committee:2024/05/09
3.Start and end dates of financial reports or annual self-assessed financial information of the reporting period (XXXX/XX/XX~XXXX/XX/XX): 2024/01/01~2024/03/31
4.Operating revenue accumulated from 1/1 to end of the period (thousand NTD):1,080,021
5.Gross profit (loss) from operations accumulated from 1/1 to end of the period (thousand NTD):466,606

1.Date of a notice of the board of directors meeting is issued:2024/04/30
2.Expected date of the board of directors meeting is convened:2024/05/09
3.Expected year and quarter of the financial reports or the annual self-assessed financial information submitted to the board of directors or approved by the board of directors:2024 first quarter Consolidated Financial Report
4.Any other matters that need to be specified:None.

1.Date of occurrence of the event:2024/04/11
2.Company name:C SUN MFG. LTD.
3.Relationship to the Company (please enter ”head office” or ”subsidiaries”):Head office
4.Reciprocal shareholding ratios:N/A
5.Cause of occurrence:The company’s consolidated preliminary after-tax profit for Q1 2024, of which the after-tax net profit attributable to the parent company was TWD 172 million, and earnings per share (EPS) were 1.15.

1.Date of the board of directors resolution:2024/03/22
2.Type and monetary amount of dividend distribution: Cash dividend of RMB25,000,000
3.Any other matters that need to be specified:None

1.Date of institutional investor conference:2024/03/06~2024/03/07
2.Time of institutional investor conference:9:00 A.M.
3.Location of institutional investor conference: Online investor conference(Taiwan)
4.Outline of institutional investor conference:The Company is invited to attend the”QIC Semiconductor Day”held by Quantum International Corporation (QIC) to announce an overview on the operating, financial and other relevant matters.
5.Any other matters that need to be specified:None

1.Date of the board of directors’ resolution:2024/03/05
2.Shareholders meeting date:2024/05/21
3.Shareholders meeting location: B1, No. 266, Sec. 1, Wenhua 2nd Rd., Linkou Dist., New Taipei City
4.Shareholders’ meeting will be held by means of (physical shareholders’ meeting/ hybrid shareholders’ meeting / virtual-only shareholders’ meeting):physical shareholders’ meeting

1.Date of the board of directors resolution:2024/03/05
2.Expected issue price:To distribute shares to employees free of charge.
3.Expected total amount (shares) of issuance: Issuing 1,200,000 common shares, with a par value of NT$10 per share, totaling an issuance amount of NT$12,000,000.
4.Vesting conditions: To employees who have worked for over a year from the date of receiving restricted stocks and have achieved a performance rating of A or above before the new stock issuance date within that year, are entitled to acquire the shares.

1.Date of occurrence of the event:2024/03/05 2.Company name:C SUN MFG. LTD. 3.Relationship to the Company (please enter ”head office” or ”subsidiaries”):head office 4.Reciprocal shareholding ratios:N/A 5.Cause of occurrence:The company transfer treasury shares to employees

1.Date of the board of directors resolution :2024/03/05
2.Year or quarter which dividends belong to:2023
3.Period which dividends belong to:2023/01/01~2023/12/31
4.Appropriations of earnings in cash dividends to shareholders (NT$ per share):NT$3 per share
5.Cash distributed from legal reserve and capital surplus to shareholders (NT$ per share):NT$0 per share