Before the design of the explosive gas environment, there must be a dangerous area of explosive dangerous areas. For simple or small factories, text description can be used."Safety and Ventilation and Purification of Painting Process of Painting Work Safety Regulations" (GB 6514-2008) specifies the internal dangerous area of closed or semi-closed paint process equipment. The spatial area within 1m is divided into two explosive dangerous areas.In accordance with the compulsory provisions of the "Design Specifications for the Dangerous Environmental Power Device" (GB 50058-2014), the selection of explosion-type ("D") structure meets the requirements of the explosive dangerous area in the 1st area. Explosion electrical control cabinet and explosion button. The combustible gases or steam explosive mixture of the paint materials are graded.