云南云天化股份有限公司第十届董事会第三次（临时）会议决议公告

Group 1 - The company held its third temporary board meeting on September 5, 2025, with all nine directors participating in the vote [2] - The board approved the proposal to acquire a 30% stake in Yunnan Tianneng Mining Co., Ltd. through public bidding, aiming to enhance resource security [3][4] - The acquisition is part of a strategy to improve the company's coal resource self-sufficiency in Yunnan, with the mining rights covering an area of 40.24 km² and estimated resources of approximately 136 million tons [4] Group 2 - The board also approved the reappointment of Zhongshun Zhonghuan Accounting Firm as the auditor for the 2025 financial year, following a review by the audit committee [7][26] - The audit firm has a strong track record, with total revenue of approximately 2.17 billion yuan in 2024, and has audited 244 listed companies [17] - The audit fees for 2024 were set at 2.79 million yuan for financial report audits and 900,000 yuan for internal control audits, totaling 3.69 million yuan [24]