Founded in 2001, Shenzhen Milestone Technology Co., Ltd. is a professional manufacturer and distributor of Gas detectors and alarm systems including fixed explosion-proof industrial gas detector , household gas detector, portable gas detector ,car gas detector and toxic gas leakage detector used in garage and so on With our exclusively patented technologies, perfect scientific methods and highly qualified staff, we devote ourselves to the manufacture and research & development in the field of high quality air-sensitive technology. With the principle of "customer first and service...