Group 1 - The company held its sixth board meeting on July 29, 2025, where all 10 directors participated, and the meeting was deemed legal and effective [2][4] - The board approved a proposal to engage in a bill pool business with China Merchants Bank, with a credit limit of 1 billion yuan [3][8] - The company will provide guarantees for its subsidiaries, with a maximum of 350 million yuan for Chongqing Chuan Yi Control Valve Co., Ltd. and 70 million yuan for Chongqing Chuan Yi Analysis Instrument Co., Ltd. [3][7] Group 2 - The bill pool business aims to enhance the management of bank acceptance bills and improve resource utilization [12] - The company has a cumulative external guarantee amount of 758.94 million yuan, which is 17.60% of the audited net assets attributable to the parent company for 2024 [16] - There are no overdue guarantees reported as of the announcement date [16]