Nanjing Haohai Marine Technology Co., Ltd. specializes in the research and development, production, and sales of underwater search and rescue instruments, hydrological instruments, meteorological instruments, underwater measurement and testing equipment, and accessory equipment. The main products include underwater detection equipment such as multi beam image sonar, side scan sonar, underwater acoustic measurement and monitoring equipment; Marine surveying equipment such as single beam depth sounders and multi beam depth sounders; Physical ocean equipment such as temperature and salinity depth meters; Marine ecological environment monitoring, marine meteorological monitoring such as multi parameter meteorological observation stations, water resource radar flow and water level meters, as well as water environment monitoring, mainly include various professional products such as multi parameter water quality meters.