Qingdao Sea, Land and Air Environmental Control Engineering Co., Ltd. (hereinafter referred to as Sea, Land and Air) is an intelligent environmental monitoring integrated system supplier and operation and maintenance service provider that integrates the research and development, integration, production, sales, and service of water collection, air and soil environmental monitoring equipment, with independent research and development as the core. Sea, land and air have built a complete technical service system and intelligent manufacturing platform, and developed a series of advanced water environment and weather automatic monitoring systems, software intelligent control systems, and environmental monitoring instruments and equipment by using Internet plus and intelligent manufacturing technologies in response to various environmental online monitoring needs. At present, dozens of patents and software copyrights have been obtained. Sea, land, and air provide users with high-quality systems and equipment, monitoring technology training, construction plan consultation, after-sales maintenance, and third-party operation and maintenance services, helping users comprehensively improve their monitoring level and operational efficiency. The company's products and services cover various laboratory and online hydrological and water quality monitoring equipment, environmental protection water stations, unmanned automatic monitoring ships, seabed foundations, underwater autonomous vehicles (AUVs), and underwater robots (ROVs); It can be widely applied to surface water and groundwater environment monitoring, marine ecological environment monitoring, river and sea hydrological survey, aquaculture, online monitoring of soil physical and chemical indicators, atmospheric environment monitoring, etc. With its strong technology and research and development capabilities, as well as a comprehensive after-sales service system, the company has established long-term and stable cooperative relationships with dozens of domestic units in hydrology, oceanography, environmental protection, universities, research institutes, enterprises, and other fields. Since its establishment, the company has undertaken a large number of large and medium-sized water environment monitoring and construction projects, especially participating in the two major systems of the National Marine Aquaculture 50 Strategy of the Ministry of Agriculture - the National Shellfish Aquaculture System Construction Project and the National Flounder and Flounder Technology System Construction Project - water quality monitoring and early warning and IoT system development and construction projects, the Qingdao Olympic Sailing Stadium Water Environment Monitoring Project, the Qingdao World Horticultural Expo Aquarium Project, the Chinese Academy of Sciences Big Science Center Project, the South to North Water Diversion Danjiangkou Water Source Monitoring Project, and the Hainan Boao Forum Site Water Environment Monitoring Project. It has exclusively participated in the UNICEF China Women and Children's Water Safety Monitoring Project and the National Oceanic Administration seawater intrusion monitoring project, and has been unanimously recognized and widely praised by industry users. The company is guided by user needs, with the mission of creating maximum value for users and the responsibility of improving the quality of the ecological environment. It has established complementary partnerships with many well-known enterprises in the field of environmental monitoring worldwide. Strategic cooperative brands mainly include: YSI from the United States, Sontek, AADI from Norway, WTW from Germany, Turner designs from the United States, Campbell from the United States, Solinst from Canada, OTT from Germany, Systea from Italy, etc.