Chongqing Mas Sci. & Tech. Co., Ltd. engages in the research and development, design, production, sales, and marketing of intelligent monitoring & control equipment and complete sets of safety assurance systems. Its business activities include mining, environmental protection, and city management business. Its Mining business offers mine safety monitoring systems, personnel and vehicle positioning systems, gas drainage monitoring systems, wireless communication systems, and gas outburst early warning systems. Its Environmental Protection business provides pollution sources online monitoring, smart river supervision, surface water quality online monitoring, and air quality online monitoring system software. Its City Management business covers smart city management comprehensive platform, hazardous gas online monitoring system, intelligent manhole cover system, and underground sewage pipes online monitoring systems. The company was founded on May 21, 2003 and is headquartered in Chongqing, China.