From April 10 to 12, 2019, the "Chinese Hydrological Technology Equipment Exhibition" sponsored by the Chinese Meteorological Society, the Shanghai Hydrological Association, the Chinese Meteorological Society Hydrological and Meteorological Committee, and supported by a number of domestic and international relevant organizations in China The exhibition center was successfully held. This is the only national-level professional exhibition in China and has become the largest hydrographic professional exhibition in Asia. In addition to Chinese users, buyers and distributors from Vietnam, Japan, Singapore, Indonesia, South Korea and the Middle East also made a special trip to China to visit and negotiate trade cooperation. This three-day exhibition brought together more than 100 units from enterprises in the hydrological industry, scientific research institutes, etc., exhibiting thousands of new products and tens of thousands of visitors.

Qingdao Daowan Technology Co., Ltd. was invited to participate in this exhibition, exhibiting the Chinese high-precision CTD. CCTV conducted a live interview with Mr. Howard Chang, founder of Daowan.

The high-precision CTD brought by Daowan at the exhibition site attracted many professionals at home and abroad to come to discuss and exchange experiences.

Customers from South Korea signed orders on the spot, and senior experts in the industry favored Daowan's high-precision CTD and directly promoted Daowan's endorsements.

During the three-day exhibition, Daowan fully demonstrated that it has been focusing on the research and development and manufacturing of high-precision CTD, and has achieved a qualitative leap. It is constantly shortening the gap with international brands. Currently, Daowan is China's first private high-precision CTD manufacturer.