Ronghui-KY Announces Change of Corporate Director Representative

1. Date of Change: 2026/07/08 2. Corporate Name: Big Wave Co., Ltd. 3. Former Representative: David Chiu 4. Former Representative's Resume: Vice President, Gold Image Electronics Co., Ltd. Senior Vice President, Gaintech Electronics Co., Ltd. 5. New Representative: Tzu-Jung Liu 6. New Representative's Resume: Brand Operations Specialist, Ershisan Neiding Co., Ltd. Senior Advertising Optimization Specialist, Ampush Marketing Co., Ltd. 7. Reason for Change: Change of corporate director representative 8. Original Term (e.g., xx/xx/xx to xx/xx/xx): 2025/06/20 to 2028/06/19 9. Effective Date of New Appointment: 2026/07/08 10. Other Matters to be Disclosed: None