PETROCHINA(SH:601857) Sou Hu Cai Jing·2025-08-06 02:32Group 1 - The State Intellectual Property Office has granted a patent for a "crude oil pipeline leakage detection system architecture and leakage location detection method" to Xi'an Changqing Technology Engineering Co., Ltd. and China National Petroleum Corporation [1] - Xi'an Changqing Technology Engineering Co., Ltd. was established in 1999, located in Xi'an, with a registered capital of 80 million RMB [1] - The company has participated in 1,771 bidding projects and holds 1,160 patents along with 4 trademark registrations [1] Group 2 - China National Petroleum Corporation was established in 1990, located in Beijing, with a registered capital of 48,690 million RMB [1] - The corporation has invested in 113 companies and participated in 5,000 bidding projects, holding 5,000 patents and 1,446 trademark registrations [1] - The corporation also possesses 28 administrative licenses [1]