Group 1 - The core point of the article is that Tiandi Technology Co., Ltd. has obtained a patent for a "drilling device for coal mines," with the authorization announcement number CN115977550B, and the application date being December 2022 [1] - Tiandi Technology Co., Ltd. was established in 2000 and is located in Beijing, primarily engaged in technology promotion and application services, with a registered capital of 4.138588892 billion RMB [1] - The company has invested in 30 enterprises, participated in 2067 bidding projects, holds 29 trademark registrations, and has 1945 patent records, along with 22 administrative licenses [1] Group 2 - China Coal Technology and Engineering Group Mining Research Institute Co., Ltd. was established in 2020 and is also located in Beijing, focusing on research and experimental development, with a registered capital of 200 million RMB [1] - This company has invested in 4 enterprises, participated in 1041 bidding projects, holds 1871 patent records, and has 10 administrative licenses [1]