Geophysical Equipment, Underground Water Detector, Well Logging manufacturer / supplier in China, offering Parallel Seismic Pile Testing Insturment for Pile Length Parallel Seismic Logging for ASTM D8381, Wireless Fiber Optic North-Finding Gyroscope Inclinometer for Both Magnetic and Non-Magnetic Borehole, Nq Pq Hq Core Orientator Drilling Rock Sample Core Orientation Tool and so on.