Core Viewpoint - The company has approved a change in the accounting method for its investment in Wuhan Tianyuan Environmental Protection Co., Ltd., transitioning from equity method accounting to fair value measurement, with changes recognized in current profit and loss [3][7][12]. Group 1: Meeting Details - The 43rd meeting of the 10th Board of Directors was held on March 31, 2025, via telecommunication voting, with all 7 directors present [2]. - The meeting was chaired by the Vice Chairman, Mr. Zhou Bin, and complied with relevant regulations [2]. Group 2: Accounting Method Change - The board unanimously approved the proposal to change the accounting method for the investment in Tianyuan Environmental from equity method to fair value measurement [3][12]. - The reason for the change is the loss of significant influence over Tianyuan Environmental, as the company's ownership has been diluted to approximately 13% [7][12]. Group 3: Financial Impact - The change in accounting method will result in a decrease of approximately 537 million yuan in long-term equity investments and an increase of about 1.074 billion yuan in trading financial assets, leading to an estimated after-tax gain of around 652 million yuan [13]. - The new accounting method will be effective from March 31, 2025 [12].