ZPEC(SH:603619) Sou Hu Cai Jing·2026-01-06 09:02Group 1 - The State Intellectual Property Office of China shows that Zhongman Petroleum Equipment Group Co., Ltd. and Zhongman Petroleum Natural Gas Group Co., Ltd. have applied for a patent titled "A Method for Detecting the Opening and Closing of a Sling Hook," with publication number CN121280331A, and the application date is September 2025 [1] - The patent abstract reveals that the invention discloses a method for detecting the opening and closing of a sling hook, which operates on a GPU, saves images captured by monitoring cameras, cleans and labels the data, and divides it into training, validation, and test sets [1] - The method modifies the YOLO11 object detection model framework, uses the Network Slimming method to prune the training model, and loads the detection model to achieve accurate detection of the sling hook's opening and closing state, improving detection accuracy and efficiency while significantly reducing computational resource consumption [1] Group 2 - Zhongman Petroleum Equipment Group Co., Ltd. was established in 2010 and is located in Shanghai, primarily engaged in the automotive manufacturing industry, with a registered capital of 390 million RMB [1] - The company has made investments in 4 enterprises, participated in 34 bidding projects, and has 3 trademark records, 114 patent records, and 52 administrative licenses [1] - Zhongman Petroleum Natural Gas Group Co., Ltd. was established in 2003 and is also located in Shanghai, primarily engaged in extraction and auxiliary activities, with a registered capital of approximately 462.34 million RMB [2] - This company has invested in 10 enterprises, participated in 22 bidding projects, and has 93 trademark records, 123 patent records, and 14 administrative licenses [2]