Xi' an Hua Fan Instrument Co., Ltd., founded in 2003, specialized in toxic and hazardous gas detection and smart life filed, including research and develop products and operation service. It' s a high-tech enterprise from R & D to technology services and whole industry chain. since enter into the market, the product of toxic and hazardous gas detection alarm device and smart home appliance, due to reliable performance, intimate and humanized design, complete high quality service won a unanimous recognition and big praise from customers, and our company, Hua Fan leap to a strong influence enterprise among the industry.