Detection of a subway tunnel at an airport in Guizhou

Detection of a subway tunnel at an airport in Guizhou

Karst exploration above a highway tunnel in Guiyang City

Karst exploration above a highway tunnel in Guiyang City

Coal mine slope shaft disease detection in a certain area of Shaanxi

Coal mine slope shaft disease detection in a certain area of Shaanxi

Coal mine inclined shaft detection in a certain area of Ningxia

Coal mine inclined shaft detection in a certain area of Ningxia

Leak detection in Chengdu

Leak detection in Chengdu

Seepage detection of a dam in Hubei Province

Seepage detection of a dam in Hubei Province

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