... for GB3836.1,2,3-2000 ,IEC60079 standard request. NICE Safety-increased lightingApplication1.Used in Zone 1 and Zone 2 dangerous place ... surface.Pressure-casted formation ,compact structure and aesthetic appearance.Suspension type thumb nut is used for fasteing,can be quickly opened ... voltage(V)220Rated power(W)250300175,250150,250175,250 NICE Safety-increased lighting