Which company does the security inspection of Chengdu Metro Line 8 belong to?

Beijing Du Jie Security Technology Co., Ltd. The security service of Chengdu Metro Line 8 is undertaken by Beijing Du Jie Security Technology Co., Ltd., a third-party enterprise with independent legal personality introduced by Chengdu Metro through bidding. Subway security inspection belongs to security work. Chengdu, referred to as "Rong" for short, is also called Rongcheng and Jincheng. Located in the middle of Sichuan Province, Chengdu is the capital and sub-provincial city of Sichuan Province, one of the first national historical and cultural cities in China, and an important central city in Southwest China.