Zhejiang Oudun Fan Co., Ltd. (hereinafter referred to as Oudun Fan) is a supplier of supply and exhaust and process ventilation equipment solutions that integrates research and development, production, and sales. The company covers an area of 20 acres, with a total investment of over 20 million yuan, more than 50 employees, and more than 10 professional and technical personnel. It is an industrial star enterprise and a large-scale enterprise in Shangyu City. Zhejiang Oudun Fan Co., Ltd. has established long-term "production, learning, and research" cooperation with many universities and research institutes in Shanghai, Zhejiang, Nanjing, Beijing, and other places. It has strong design innovation and technological development capabilities, and has been committed to designing and manufacturing "specialized, special, and new" ventilation equipment. The products manufactured have complete national certification and testing certificates, and production qualifications, and have received unanimous recognition and praise from industry regulatory authorities for Oudun. Based on advanced CAD, UG 2D and 3D software design technology and rich professional manufacturing experience, we have developed nearly 20 series, more than 2000 varieties and specifications of various types of fans and environmental protection products. We have won national and provincial (ministerial) level scientific and technological achievement awards, as well as technical progress awards multiple times. Our products have established a high reputation in the market due to their novel structure, low noise, high efficiency, stable performance, and long service life, and have become the preferred products of various design institutes and customer units. Oudun fully utilizes its expertise in various fields such as fire protection, civil air defense, air conditioning, ventilation and dust removal, cooling, dust removal, purification, etc. Its products have covered major cities across the country, such as Beijing, Tianjin, Zhejiang, Shanghai, Jiangsu, Shaanxi, Shanxi, Lanzhou, Chongqing, Guangdong, Fujian, etc.