1. intelligent beijing hongyun sihai technology co., ltd. is a professional meteorological station manufacturer, committed to the independent research and development and production of various detection instruments such as automatic meteorological stations, portable automatic meteorological stations, solar energy detection, solar energy laboratories, and heat collector detection. advanced testing methods, complete processing technology, and professionally create high-quality meteorological and environmental instruments and solar energy detection equipment. 3 quick door 10 of

second-rate