BPS series flameproof industrial fan applied in the condition of explosion-proof gas compound with factory Ⅱ type , Grade A , B and the temperature T1-T4.It widely used for ventilation and sunstroke in office, oil, military industry, chemical industry, medicine, metallurgy, etc. We also get explosion-proof certificate. The impeller made of aluminum alloy.has strong points such as operate steadily, beauty appearance, rational structure, etc.The Explosion-proof Mark is