The explosion-proof 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 sturucture, etc. The ATEX certificate is in progress now. The Explosion-proof Mark is EX d.