In order to give you convenience and enlarge our business, we also have inspectors in QC Team and assure you our best service and product for So2 Sensor, Polymer Filter , Portable Methane Gas Detector , Humidity Probe ,Dew Point Sensor . Since establishment in the early 1990s, we have set up our sale network in USA, Germany, Asia, and several Middle Eastern countries. We aim to be a top class supplier for worldwide OEM and aftermarket! The product will supply to all over the world, such as Europe, America, Australia,Johor , Comoros ,Riyadh , Provence .We have more than 100 works in the plant, and we also have a 15 guys work team to service our customers for before and after sales. Good quality is the key factor for the company to stand out from other competitors. Seeing is Believing, want more information? Just trial on its products!