Scope 
 1 for 1 and Zone 2 dangerous places. 
 2, for IIA, IIB, IIC-level explosive atmosphere. 
 Note: if required class or IIC increased safety, please specify. 
 Features 
 1, cast aluminum alloy, die casting, surface spray. 
 2, into the outlet has a variety of ways and specifications. 
 3, in line with GB3836-2000. IEC60079 standards.