Sichuan Keride Pharmaceutical Co., Ltd. is a high-tech enterprise integrating drug research and development, production and sales. Pharmaceutical factory is a part of the chemical industry, the use of acetone, methanol, alcohol and other a large number of dangerous goods, so buried a great security risks. In the production process, harmful gases such as hydrogen sulfide and ammonia will be produced, endangering human health. The project adopts ASD5300C,ASD5300 detector and JB-TB-ASD5100 alarm controller.