Fan categories: sidewall fans, heaters, axial fans, centrifugal fans, mixed flow fan, Francis fan, chassis and other wind; other products: stainless steel molded tanks, galvanized steel molded tanks, enamel tank, plumbing equipment. Our attention to the credibility of axial fan prices, ensure the quality of products, focusing on small profits, fast delivery Buy axial fans, and after-sales service system, a lot of new construction in recent years to provide air-conditioning equipment, from product quality and after-sales service users have been satisfied when the distance is small two-stage axial fans, bit stream and trail changes will have an impact, the blades may also be used as sound barriers, and strengthen the pulsating sound of the lift on the blade near the blade rows generated radiation. This effect depends on the lift pulsation-related acoustic wavelength as compared with the size of the blade barrier. Within this ratio is more than 2 frequency range, due to the impact caused by changes in the intensity of radiation is the most significant. Therefore, when the upstream and downstream of the radiation noise of the blade has the same number of leaves, and the leaves of the two columns of each of the blades on both sides of the source and at the same time constituting a sound barrier with a rotor blade meet, this effect will be stronger. Purchasing axial fan, ventilation equipment Plumper (certified), axial fans are provided by Shandong Dezhou Plumper ventilation plant. Dezhou Plumper ventilation plant (#) is a leader in Dezhou, 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. Rich ventilation equipment in leadership with the staff warmly welcome all inquiries negotiations to create rich, ventilation a better future.