9-26 dust blower, fans should be running in the following altitude, ambient temperature and relative humidity conditions: altitude does not exceed 1000m: welds should be neat, no weld, crater, spatter, etc. The outer surface of the cabinet should be clean, smooth, no bump, scratches and other defects. 9-26 _ stainless steel dust blower fan (certified) _ Weifang dust blower provided by Zibo Blower Factory Co., Ltd. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is an industry leader in Shandong Zibo, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Zibo Blower leadership with the staff warmly welcome all inquiries negotiations to create a better future Zibo Blower.