Group 1 - The State Intellectual Property Office of China shows that LiuGong Excavator Co., Ltd., LiuGong Changzhou Machinery Co., Ltd., and Guangxi LiuGong Machinery Co., Ltd. have applied for a patent titled "Intelligent Control Method and Device for Hydraulic Pump of Excavator," with publication number CN121382602A, and application date of November 2025 [1] - The patent involves a control technology for excavators, which includes determining hydraulic pump pressure, displacement information, and motor speed of the target excavator, and judging whether it meets preset abnormal load conditions [1] - The implementation of this invention aims to enhance the comprehensiveness and rationality of the excavator's operational control, thereby improving accuracy, reliability, efficiency, convenience, and timeliness, ultimately preventing rapid motor speed decline under sudden load increases [1] Group 2 - LiuGong Excavator Co., Ltd. was established in 2006, located in Liuzhou, primarily engaged in specialized equipment manufacturing, with a registered capital of 922.1847 million RMB [2] - LiuGong Changzhou Machinery Co., Ltd. was founded in 2010, located in Changzhou, focusing on professional technical services, with a registered capital of 530 million RMB [2] - Guangxi LiuGong Machinery Co., Ltd. was established in 1993, also located in Liuzhou, primarily in specialized equipment manufacturing, with a registered capital of 2032.200321 million RMB [2]