Waterproof High sensitivity GHL-1 3 Component Geophone String , Geophone Sensor

3 Component Geophone String ① GHL-1 3 Component Terrestrial Seismic Geophone String ② GHL-2 pushing type borehole 3 component geophone string ③ GHL-3 Downhole 3 Component Terrestrial Seismic Geophone String Five 3 Component Geophone String 1 Product name ① GHL-1 3 Component Geophone String 2 Product introduction Fast detailed description: 1 high sensitivity 2 low distortion 3 perfect damping 4 good linear response 5 wonderful waterproof and split-hair resolution Description: