Group 1 - The State Intellectual Property Office of China has published a patent application for a "400 km/h contact network special anti-fatigue electrical connection line connection process" by China Railway Construction Electrification Bureau Group Kangyuan New Materials Co., Ltd., China Railway Construction Electrification Bureau Group Co., Ltd., and China Railway Construction Corporation Limited [1] - The patent describes a connection process that features high fatigue resistance, high mechanical strength, and excellent conductivity, suitable for high-speed dynamic conditions [1] - The electrical connection line is designed to ensure smooth current transition between the contact line and the supporting cable, preventing current from flowing through the suspension wire and support devices, which could lead to damage [1] Group 2 - China Railway Construction Electrification Bureau Group Kangyuan New Materials Co., Ltd. was established in 2005, located in Wuxi, with a registered capital of 27 million RMB, primarily engaged in manufacturing for railways, ships, aerospace, and other transportation equipment [2] - China Railway Construction Electrification Bureau Group Co., Ltd. was founded in 1994, based in Beijing, with a registered capital of 380 million RMB, focusing on civil engineering construction and has participated in 5,000 bidding projects [2] - China Railway Construction Corporation Limited was established in 2007, also located in Beijing, with a registered capital of approximately 1,357.95 million RMB, involved in civil engineering construction and has invested in 115 enterprises [2]
中铁建康远新材料等申请400时速接触网专用抗疲劳电连接线连接工艺专利，避免承力索的电流烧损吊弦线定位装置等