Group 1 - The core point of the news is that Zoomlion Heavy Industry Science & Technology Co., Ltd. has applied for a patent related to a hydraulic control system for supporting legs, indicating ongoing innovation in hydraulic technology [1] - The patent application, titled "Hydraulic Control System, Method and Working Machinery for Supporting Legs," was filed on March 2025 and is aimed at enhancing the safety and efficiency of hydraulic systems [1] - The hydraulic control system includes components such as a leg cylinder, a valve group, and pressure relief devices, which are designed to respond quickly to pressure anomalies, ensuring operational safety [1] Group 2 - Zoomlion Heavy Industry was established in 1999 and is based in Changsha, primarily engaged in the automotive manufacturing sector [2] - The company has a registered capital of approximately 867.8 million RMB and has made investments in 104 enterprises [2] - Zoomlion has participated in around 5,000 bidding projects and holds a significant number of intellectual property assets, including 1,178 trademarks and 5,000 patents [2]