15 minutes after takeoff until the seat belt sign is switched on in preparation for landing 从起飞后15分钟后开始到准备降落安全指示灯亮起为止
Since our establishment , we have been specialized in " road safety and construction " equipment , namely traffic bollard , water filled road barrier , garbage chute , garbage trolley 本公司现阶段专注生产道路安全及建筑工程设备,包括:道路安全指示灯道路分道栏和塑胶制废料槽。