Roots Fan, Foshan Nanhai Jiuzhou Pratt & Whitney Fan Co., Ltd. is a professional fan manufacturer and was founded in 1996. The head office is located in Foshan City, Guangdong, South China, and the branch is located in Songjiang District, Shanghai, China. Member of General Machinery Fan Industry Association, member of China Electric Industry Association Sub-horsepower Motor Branch, member of Guangdong Quality Association, member of Guangdong Environmental Protection Industry Association. The factory covers an area of 80,000 square meters, and the standard factory building covers an area of 30,000 square meters. It has more than 600 employees, and has general and numerical control equipment such as machining, sheet metal, stamping, cutting, riveting, dynamic balancing, and various precision measuring tools. And testing equipment; built fan assembly, automatic temperature drying and motor production line, in cooperation with Xi'an Jiaotong University, the application of advanced MGS, CAT automatic test system, the establishment of advanced fan aerodynamic performance testing center and motor performance testing center, comprehensive The use of CAD and CAXA auxiliary design systems and long-term cooperation with a number of colleges and universities to participate in technology research and development and talent training have created a group of outstanding professional and technical personnel and marketing teams. It has laid a solid foundation for product development and quality control. Roots blower "Jiuzhou Pratt & Whitney" has successively passed ISO9001: 2000 international quality system certification, CCC, CE and other product quality and safety certifications, and has successively obtained "China's Top Ten Fan Quality Brands", "National Fixed Fire Extinguishing System and Quality Supervision and Inspection of Refractory Components" "Center qualified products", "National Compressor Refrigeration Equipment Quality Supervision and Inspection Center qualified products", 2004 (Shanghai), 2006 (Beijing) "China International Fluid Machinery Exhibition Gold Award" and many other awards and titles. Roots Fan “Jiuzhou Pratt & Whitney” has been adhering to the core philosophy of “pursuing excellence, casting good quality with heart” for many years, advancing with the times, implementing brand operation strategies, so that the company's products have excellent cost performance and efficient and efficient service characteristics. Based on the business policy of “honesty, pragmatic innovation, strengthen management, and new heights”, we will create a well-known brand enterprise full of vitality and competitiveness. We will sincerely cooperate with customers at home and abroad with a pragmatic attitude to create a better tomorrow! Roots blower enterprise spirit of excellence, continuous innovation, quality first service, leading Roots blowers are volume fans, the amount of air delivered is proportional to the number of revolutions, and a small gap is always maintained between the impeller end face and the front and rear cover of the fan and between the fan impeller. The downwind is driven by the synchronous gear from the fan inlet to the discharge side along the inner wall of the casing. The inner cavity of the fan does not require lubricating oil, and has a simple structure, stable operation, stable performance, and adaptability to various uses. It has been used in a wide range of fields. It is widely used in sewage treatment, soot desulfurization, material transportation, gas and flammable and explosive gas transportation, heavy oil injection, blast furnace smelting, aquaculture, pesticide chemical industry, and formaldehyde synthesis.