访客易介绍TSV-P2 政府机关、企事业单位、部队、学校、居民小区等一般均在大门出入口处设置门卫或传达室，对进出的非本单位人员（包括车辆）进行管理及咨询服务-Visitors easy to introduce TSV-P2 government agencies, enterprises, military units, schools, residential quarters and other generally set at the entrance gate guard or j