Group 1 - The State Intellectual Property Office of China has granted a patent for a "drill-anchor integrated anchor drilling machine" to China Coal Technology and Engineering Group (Tianjin) Rock Layer Intelligent Control Technology Co., Ltd., China Coal Technology and Engineering Research Institute Co., Ltd., and Tiandi Technology Co., Ltd. The patent authorization announcement number is CN119754823B, with an application date of December 2024 [1] - China Coal Technology and Engineering Group (Tianjin) Rock Layer Intelligent Control Technology Co., Ltd. was established in 2024 in Tianjin, focusing on specialized equipment manufacturing. The company has a registered capital of 50 million RMB and has participated in 85 bidding projects and holds 86 patents [1] - China Coal Technology and Engineering Research Institute Co., Ltd. was established in 2020 in Beijing, primarily engaged in research and experimental development. The company has a registered capital of 50 million RMB, has invested in 3 enterprises, participated in 947 bidding projects, holds 1785 patents, and has 10 administrative licenses [1] Group 2 - Tiandi Technology Co., Ltd. was established in 2000 in Beijing, focusing on technology promotion and application services. The company has a registered capital of approximately 413.86 million RMB, has invested in 29 enterprises, participated in 1971 bidding projects, holds 33 trademark registrations, 1888 patents, and has 19 administrative licenses [2]