至纯科技为子公司提供担保，累计担保额在额度内

Group 1 - The company Shanghai Zhichun Clean System Technology Co., Ltd. announced guarantees for its wholly-owned and controlling subsidiaries, including System Integration, Bohui Technology, and Zhuhai Zhiwei [1] - Guarantees provided are 350 million, 20 million, and 48 million yuan respectively, with cumulative guarantee balances of 647 million, 63 million, and 0 yuan as of the announcement date, all within the approved limits of the shareholders' meeting [1] - By the end of 2024, the asset-liability ratio of System Integration is expected to exceed 70%, indicating potential risks for investors [1] Group 2 - The total external guarantees provided by the company amount to 2.995 billion yuan, which represents 62% of the audited net assets attributable to shareholders for the year 2024 [1] - There are no overdue guarantees as of the announcement date [1]