Inner Mongolia Puyin Medical Technology Co., Ltd. produces antiviral, anti-tumor, cardiovascular and cerebrovascular drugs. Pharmaceutical factories generally through the weighing of raw materials, filtration, potting, sterilization and other production processes, in the production process, there are aldehydes, hydrogen sulfide, ammonia and other industrial waste gas production, hydrogen sulfide gas is highly toxic and flammable. Ammonia is also a toxic gas. The project uses the ASD5300C, ASD5300 detector and JB-TB-ASD5100 alarm controller.