Fan structure №4 ~ 6.3 mainly by the impeller, housing, air inlet, bracket and so on; №7.1 ~ 16 mainly by the impeller, housing, air inlet, transmission and other components. Impeller: 9-19 type fan blade fan impeller balance is 12, 9-26 type fan blade is 16. Belong to the curved front. The outer edge of the impeller diffuser highest weekly rate shall not exceed 140m / s. After forming the impeller static and dynamic balance correction and overdrive experiments, it is smooth. Fan service, fan muffler (certified), Kenli fans by Zibo Blower Factory Co., Ltd. Zibo Blower Factory Co., Ltd. (www.zibo-fengji.com) is a professional "fans, mine fan, mine fan, explosion-proof fan, heat fan, boiler fan" of the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage of healthy competition in the market, so that the "cloud laugh" brand has a good reputation. We adhere to the "service first, customer first" principle, so that the congregation Zibo Blower won the trust of customers in fan, ventilation equipment, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!