中海达：自主研制了单波束测深仪等产品

Core Viewpoint - The company Zhonghaidah (300177) has developed various products based on acoustic detection technology, which are widely used in marine engineering and surveying applications [1] Product Development - The company has independently developed single-beam and multi-beam echo sounders, as well as single and dual-frequency ADCP acoustic Doppler current profilers [1] - The product lineup also includes unmanned vessels, field data collection software, and post-processing software for internal use [1] Application Areas - The products are applied in various fields such as marine construction, marine surveying, underwater topographic measurement, hydrological surveying, hydrological flow measurement, emergency rescue, underwater archaeology, and reservoir capacity measurement [1]