Explosion-proof Wall Mount Door Holder

explosion-proof electric door holder is widely used in petrochemical industry and dangerous environments such as chemical, oil depots, ships, drilling, platforms, gas stations, ports,aerospace, military industry, medicine, steel, fireworks factories, mechanical grain processing and storage, etc, oil depots, ships, drilling, platforms, gas stations, ports,aerospace, military industry, medicine, steel, fireworks factories, mechanical grain processing and storage, etc.