Mainly refers to the equipment of civil armed forces. These generally include: biochemical substances detection (drugs, explosives, poisonous gas, corrosive substances, etc.) , the isolation protection of biochemical substances and other special equipment. Such as the subway etc. public transportation security inspection equipment, civilian fire control facilities, drug testing, biochemical toxic gas detection, fire insulation clothes, biochemical protective clothing and so on, also including the life detectors, which are used to search and rescue work when earthquake, floods and other natural disasters occur, as well as intercom equipment and eavesdropping radio station for the usage of police communications.