Authorities should also guard against secondary geological hazards, transport people affected to safe areas and provide them with sufficient shelter, food, drinking water and medical services.

Authorities % should also guard against secondary geological hazards, transport people affected to safe areas and provide them with sufficient shelter, food, drinking water and medical services.

On the basis of the material technology in China, the mineral nutrition drinking water filter device has low cost, and effectively prevents the secondary pollution and is safer and more reliable;