Group 1 - The core point of the article is that Guangxi Yuchai Machinery Co., Ltd. has obtained a patent for a "Calibration Tool for Engine Torque Sensors," with the authorization announcement number CN115077788B, and the application date was July 2022 [1] - Guangxi Yuchai Machinery Co., Ltd. was established in 1993 and is located in Yulin City, primarily engaged in the manufacturing of specialized equipment [1] - The company has a registered capital of 4,729.89346 million RMB and has made investments in 17 enterprises, participated in 947 bidding projects, and holds 15 trademark registrations and 5,000 patent registrations [1] - Additionally, the company possesses 1,195 administrative licenses [1]