For single frequency echo sounder , everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our single frequency echo sounder has been well received by many customers and enjoyed a good reputation in many countries. Chongqing Gold M& E Equipment Co., Ltd. single frequency echo sounder have characteristic design & practical performance & competitive price, for more information on the single frequency echo sounder , please feel free to contact us.