Hanwei Electronics Group Corporation (Stock no.:300007)，founded in 1998,is the largest gas sensors and instruments manufacturer and the leading sensor-based IoT solution supplier in China. With IoT industry as center, Hanwei combined related technology such as sensors, intelligent terminal, communication technology, geographic information,cloud computing,big data etc. to creat Hanwei Cloud and a complete IoT industry chain. Hanwei group devotes to provide perfect solution for smart city, production safety, environmental protection and health of the people’s livelihood, making things intelligent and creating new values to our work and life unceasingly.