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BHD 20-400, 200, 100, 40, 25 Mining explosion proof type low-voltage cable collecting box applys for methane gas mixed and explosion hazard gas underground, as the driving force, lighting, signals and power cables connecting branch use.
Mainy by the shell,covered body,the intemal wiring and grounding device inside and outside of going clamping device, and so on, the main material for the HT250 gray castiron and ceramic glazing wiring blocks.