Geophysical Equipment, Underground Water Detector, Well Logging manufacturer / supplier in China, offering Liquid Level Meter with -20℃ to 60℃ Wrking Temperature for Hydrological Detection, Submersible Borehole Camera Lithology Analysis Camera 15MPa Pressure Borehole Camera, Borehole Caliper Measurement Tool Directional Drilling Camera Borehole Trajectory Mapper and so on.