Group 1 - Sichuan Changhong Air Conditioning Co., Ltd. has applied for a patent titled "A Method for Optimizing the Strength Design of Axial Flow Fans," with publication number CN120337431A, and the application date is March 2025 [1] - The patent involves a method for optimizing the strength of axial flow fans, which includes steps such as creating a 3D model, conducting digital strength analysis, identifying weak points, and applying topology optimization algorithms to enhance the design [1] - The innovation aims to address the strength and cost assessment issues in the design of axial flow fans, facilitating efficient strength evaluation and lean design of air conditioning products [1] Group 2 - Sichuan Changhong Air Conditioning Co., Ltd. was established in 2008 and is located in Mianyang, primarily engaged in other manufacturing industries [2] - The company has a registered capital of 85 million RMB and has made investments in 8 enterprises, participated in 1,427 bidding projects, and holds 1,642 patents [2] - Additionally, the company possesses 15 trademark registrations and has obtained 100 administrative licenses [2]