When the fan as the main fan and fan DK45 stations fan should be equipped with a special diffuser. Main ventilator equipped with diffusion surface may be part of the dynamic pressure into static pressure exhaust fan, reduce the export of stainless steel fan dynamic pressure loss in order to save energy. Fruit. 1, the tip and the housing gap is uniform, minimum clearance of not less than 2.5mm; 2, chassis, blade is solid, whether there is cracking; 3, the fan disk drive should be flexible. DK40 fans, the main fan (certified), Nujiang fan 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.