Henan Hanwei Electronics Co.,Ltd.(Stock no.:300007) founded in 1998,is a trustworthy innovative technology company, and the largest gas sensors and instruments manufacturer in China, listed on China’s Growth Enterprise Board in the first batch, devote ourselves to promise a safe, environmental friendly, healthy and smart working and living environment. Around IOT industry, Hanwei Electronics will combine sensors, intelligent terminal, communication technology, cloud computing and geographic information IOT technology together closely, create Hanwei clound, establisha complete IOT industry chain. Hanwei Electronics focus on the customer value oriented, provideperfectsolutions for smart city, production safety, environmental protection, health of the people's livelihood.