First, determine what kind of high-pressure blower to use, such as three-leaf Roots blower, cyclone blower, scroll blower, multi-stage centrifugal blower, etc. In small occasions, if the requirement for air volume is not high, and the air volume is less than 5m3/min, three leaves roots blowers, rotary type and scroll type can be selected. For a large air volume of 5 to 250 cubic meters per minute, it is recommended to choose three roots blowers. Practice has proved that it has high efficiency and the most economical operation cost. Multi-stage centrifugal fan should be selected when the air volume is large. At present, domestic high-pressure fans are all from Changfeng and Gong Jin, with low failure rate and low cost. Each type of fan is different. You can ask the supplier directly, or ask him to help you choose directly. I think many people in Baidu Library share the selection form, or you can go there and look for it manually. I hope it can be adopted. The top ten brands in the high-pressure cyclone industry are: Shenyang Blower, Shaanxi Blower, Shandong Zhangqiu Blower, Changsha Blower, Shandong Gong Jin, Zhejiang Yilida Blower, Zhejiang Shangfeng Hi-Tech, Jintongling Technology, Southern Blower and Haodunhua Project. 1, Shenyang Blower Group Co., Ltd. started from 1934, an earlier professional manufacturer of fans, with the ability to design and manufacture large-scale domestic equipment, specializing in the design/manufacture of R&D/ fans and pumps. 2. Shaanxi Blower (Group) Co., Ltd. 1968 started as a subsidiary of Shaanxi Drum Group, which specializes in compressor manufacturing and distributed energy system solutions and service providers, and is a large-scale complete equipment enterprise specializing in designing and manufacturing turbine machinery. 3. Shandong Zhangqiu Blower Co., Ltd., established in 1968, has rich technical experience in fan design/manufacturing, and is an enterprise integrating R&D/ Roots Blower/Centrifugal Blower/Industrial Pump/Blower/Pneumatic Conveying System and other mechanical products. 4. Changsha Blower Factory Co., Ltd. Changsha Blower Factory Co., Ltd. (formerly Changsha Blower Factory) is a large-scale national backbone enterprise, a top 500 enterprise in China machinery industry, a designated manufacturer of national major technical equipment supporting fans, and a drafting unit of national standards for Roots blowers. 5. Shandong Gong Jin Co., Ltd., founded in 1996, is a subsidiary of Harbin Institute of Technology, a well-known brand in ventilation/high-pressure fan industry, and a high-tech enterprise specializing in R&D and manufacturing three leaves roots blowers/centrifugal fan/pneumatic conveying complete equipment. 6. Zhejiang Yilida Fan Co., Ltd., founded in 1994, is an enterprise that produces construction fans/engineering fans, and owns brands such as Yilida/Walter/Furama/Mar.7.. Zhejiang Shangfeng Hi-Tech Professional Wind Industry Co., Ltd. was established in 1974. Is a fan manufacturer and integrated service provider engaged in R&D/ production/sales of large-scale ventilation equipment. 8. Jintongling Technology Group Co., Ltd. was established in 1993. It is a well-known provider of engineering technical solutions for fluid machinery and compressors in China, and a technology-intensive modern equipment manufacturing service enterprise integrating R&D and manufacturing. 9. Southern Fan Co., Ltd. was established in 1988. It is a large-scale enterprise specializing in ventilation and air conditioning system design, product development, manufacturing and sales in South China. Its business is mainly oriented to nuclear power, subway, tunnel, large industrial and civil buildings, energy engineering and other fields. Haodunhua Engineering Co., Ltd., founded in 10, is a large group enterprise engaged in the design, manufacture and sales of air and gas treatment equipment. Its main products include industrial fans/process gas compressors/rotary heat exchangers, providing customized services on demand, and enjoying a worldwide reputation for its high performance.