... /min, Pressure:490~1800Pa, Shipbuilding Fan blower for shipyard use Draft fan:Weight:25~352kg,Volume:500~21000m3/ ... 5°.COMPANY INTRODUCTION Our company,Qingdao Chunhao Air Blower Ventilation Equipment Co., Ltd. is located ... company in designing, producing, and serving ventilators for ships and other aeration facilities. Our products - ... ,Shandong province,China Shipbuilding Fan blower--Centrifugal fan