This product is designed bureau Ventilator, with explosion-proof certification and "MA" safety signs Zhunyongzheng FB Bureau Ventilator, its matching motor also has the two license bureau fan impeller, is flameproof safety products. Merry from the collector end axially into the wheel acceleration level Ⅰ deflected airflow direction to flow into the first grade Ⅱ hosts, the air flow direction after the first-stage impeller accelerates again Ⅱ reverse deflection discharged from the diffuser end axially. YBT Board Ventilator | Baotou Bureau Ventilator | provided by Zibo Zibo Blower Fan Factory Limited. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) strong, credible, Shandong Zibo fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zibo Blower and you hand into the brilliant, for a better future!