Founded in 2004, TIANDUNBJ TECHNOLOGY CO., LTD is a high-tech enterprise that integrates the research and development and production of hydrophones, seismometers and acoustic releasers based on the OBS technology of seafloor seismometers. SinOBS seafloor seismometers have the characteristics of low power consumption, low cost, high integration and high recovery rate. At present, they have realized independent production. The company owns the intellectual property rights of its design, research and development, production and other links. It is at the international leading level in terms of recording time, working water depth, sensor diversity and amplitude-frequency response. It is mainly used in the fields of deep earth structure research, marine oil and gas resource exploration and marine earthquake monitoring.