Henan Hanwei Electronics Co. Ltd. ,ISO90012000 certified: established in 1998, with approx. 400 employees is expert in the R,D manufacture, and marketing of a full line of gas-detection products and solutions in China.brbrHanwei products can be divided into domestic gas alarms> portable gas detectors industrial fixed systems, breath alcohol testers and gas analyzers as well as gas sensors and key elements for gas detection. Unique from other gas detector suppliers, we have the core technology of gas sensing which drives us ahead in developing complete gas detection solutions.,br>brHanwei R>D Center has the first-grade team of more than 100 engineers advanced test equipments, scientific methods and project management system in line with international standard. They are ready for supplying professional and exact technical service and designing projects to meet local customer,s needs. The independent technology from sensors to detectors enables us to afford one-stop gas detection solution service all over the world.br