1 and Zone 2 dangerous places. 
 IIA, IIB, IIC explosive gas environment 
 Shell structure of increasing safety, the use of glass fiber reinforced unsaturated polyester resin. 
 (SMC) from repression, appearance, corrosion resistant, impact resistance, thermal stability 
 Shell and cover the joints for the surface labyrinth structure to ensure a higher protection 
 Pass good good good qualitative tradition. 
 Level. 
 Built-in switch is flameproof switch, very few free stack according to user requirements. 
 Pipe and cable wiring. Customer's request 
 Meet GB3836-2000, IEC60079. Standard