... forGroups IIA,IIB,Temperature classes T1~T43,Designed for sites with explosive atmosphere, such as petroleum exploitation, refinery, storage, ... made up of explosion proof motor , fan blades ,wind cylinder etc.2,Fan blades with large chord ,space warps, tilted structure ... , Low consumption, and secure the explosive proof performance.6,With flexible installation: Bracket type, Pipe line type, Post type ...