Star Source Material: The actual guarantee balance of the company and its subsidiaries is 6.376 billion yuan, and there is no illegal guarantee.

Star Source Material Announcement, the company's wholly-owned subsidiary Engnovate New Materials Technology Co., Ltd. applied for bank loans from China Export-Import Bank Shenzhen Branch and National Development Bank Shenzhen Branch for business development needs. The company undertakes joint liability guarantees for the above business not exceeding RMB 1.5 billion, and has recently signed a "Guarantee Contract" with the aforementioned banks. As of the date of this announcement, the actual guarantee balance of the company and its subsidiaries is RMB 6,375.7236 million, accounting for 65.06% of the audited net assets of the company in 2024. The above guarantees comply with relevant regulations of the China Securities Regulatory Commission and there are no violations of guarantees. The company does not have any overdue guarantee situations, nor does it provide guarantees for the controlling shareholder, actual controller, and their related parties.