Group 1 - The State Intellectual Property Office of China has granted a patent to Weichai Power Co., Ltd. and Weifang Weichai Power Technology Co., Ltd. for a "method and device for detecting wiring faults," with the announcement number CN115113105B and application date of June 2022 [1] - Weichai Power Co., Ltd., established in 2002 and located in Weifang, primarily engages in the automotive manufacturing industry, with a registered capital of 87,156.71296 million RMB [1] - The company has invested in 64 enterprises, participated in 5,000 bidding projects, holds 736 trademark registrations, and has 5,000 patent records, along with 778 administrative licenses [1] Group 2 - Weifang Weichai Power Technology Co., Ltd., founded in 2017 and also based in Weifang, focuses on research and experimental development, with a registered capital of 17,600 million RMB [1] - This subsidiary has participated in 6 bidding projects, holds 879 patent records, and possesses 3 administrative licenses [1]