Our firm since its inception, normally regards item top quality as company life, constantly make improvements to generation technology, improve product excellent and repeatedly strengthen organization total good quality management, in strict accordance with the national standard ISO 9001:2000 for indoor air quality monitoring device, , , ,. Sincerely hope to build long term business relationships with you and we will do our best service for you. The product will supply to all over the world, such as Europe, America, Australia,El Salvador, Ottawa,Singapore, Malawi.We have now 48 provincial agencies in the country. We also have stable cooperation with several international trading companies. They place order with us and export solutions to other countries. We expect to cooperate with you to develop a larger market.