Explosion-proof is required in hazardous areas such as combustible or flammable gases, vapours, dust, fibres and flyings.
In specific cases:
gas stations, flour factories, oil factories, and underground pipelines.....

Explosion-proof is required in hazardous areas such as combustible or flammable gases, vapours, dust, fibres and flyings.
In specific cases:
gas stations, flour factories, oil factories, and underground pipelines.....