নদী / হ্রদ / জলা জোন পেশাগত ভূতাত্ত্বিক অন্বেষণ geophone জলতলের hydrophone

1 Product name Hydrophone (A),HJ-8 type piezoelectric detector HJ-8 type piezoelectric detector is mainly used for marine geological exploration. With the receiving frequency band range of housing design, unique wide and high sensitivity. The maximum depth is 100 meters. Mainly used in marine areas, rivers, lakes, swamps and transition zone etc.. This product adopts unique polyurethane material and process for packaging. Has the characteristics of corrosion resistance,