Chengdu Metro Line 1, 49 security doors have used one week, a reporter yesterday from the Chengdu Orbital Corporation was informed that the total usage of security door is good, the public more cooperation, the number of contraband to check out the previous security doors installed is greatly decreased, the alarm after checking out items for key chain, mobile phone and other metal objects. Security doors installed, in the face of February 26th 206000 passenger can normally deal with, without causing congestion.