Mainly used in underground mining working and used in drilling chambers for fixed local lighting , where explosive hybrid gas of methane and coal dust are excess. Can not be used on the mining working platform .
Specialized explosion proof design, and the level of explosion proof can reach Exd ⅡB T6 standard. High strength die-casting aluminum material, and has a zinc-coat surface with spraying plastics. It has a gauge cover made of high strength tempered glass, with a better anti corrosive quality.