1. Widely used in oil extraction, oil refining, chemical, offshore oil platforms, oil tankers and other flammable and explosive gas environment, Also used for military, ports, food storage, metal processing and other flammable dust sites;
2. Suitable for explosive gas environment zone 1, zone 2;
3. Explosive atmosphere: class ⅡA,ⅡB, ⅡC;
4. Suitable for combustible dust environment in the area 22, 21;
5. Suitable for high protection requirements, damp places.