Between 17, 500 and 25, 400 feet in elevation, the snow and soil samples they tested exceeded the U.S. Environmental Protection Agency's tolerance levels for both arsenic and cadmium.
Protection equipment against avalanches. snow fence. design specifications.
防雪崩设备。防雪栅栏。设计规范。
3
Zhangjiajie middle reaches of the snow, you have no need for the sake of safety, the area of staff, wherever and whenever visitors are God's protection.