Group 1 - The State Intellectual Property Office of China has granted a patent for "Excavation Equipment and Its Application in Steep Inclined Shaft Construction" to four companies, including Luoyang Xinbang Technology Co., Ltd. and Henan Weibang Machinery Co., Ltd. [1] - Luoyang Xinbang Technology Co., Ltd. was established in 2023 with a registered capital of 1 million RMB and focuses on technology promotion and application services [1] - Henan Weibang Machinery Co., Ltd. was founded in 2015 with a registered capital of 20 million RMB, primarily engaged in the manufacturing of specialized equipment [1] Group 2 - China Water Resources and Hydropower No. 14 Engineering Bureau Co., Ltd. was established in 1981 with a registered capital of approximately 2.47 billion RMB, specializing in civil engineering construction [2] - This company has invested in 55 enterprises and participated in 5,000 bidding projects, holding 2,371 patents and 618 administrative licenses [2] - State Energy Group Jinsha River Xulong Hydropower Co., Ltd. was founded in 2018 with a registered capital of 4 billion RMB, focusing on electricity and heat production and supply [2] - This company has participated in 306 bidding projects and holds 34 patents along with 13 administrative licenses [2]