During cavern construction, the drilling procedure conducted by the drilling jumbos with the Measurement-While-Drilling system will further enhance the accuracy of drilling, thereby raising the construction quality.

During cavern construction, the drilling procedure conducted by the drilling jumbos with the Measurement-While-Drilling system will further enhance the accuracy of drilling, thereby raising the construction quality.

During cavern construction, the drilling procedure conducted by the drilling jumbos with the Measurement-While-Drilling system will further enhance the accuracy of drilling, thereby raising the construction quality.