China's economy has entered a high-speed development, people's quality of life requirements are further improved, with the rapid development of the construction industry is now more and more high-rise buildings, the internal structure of the building is more and more complex, the area is also growing, in this case, many buildings have been used. The use of ventilation ducts in buildings reflects the more humane nature of the building itself, and also makes the ventilation ducts industry get more room for development.

In fact, the ventilation system engineering in the building is in the actual construction, adding some layout of the ventilation duct, making the air in the building effective flow, more close to the requirements of natural wind, so that the whole building has the function of natural ventilation and ventilation. But in the design and construction of the whole ventilation system, it should be noted that the quality of the ventilation duct will directly affect the ventilation and ventilation function of the whole building, so we must put forward higher requirements for the processing technology of the ventilation duct, so in the construction of the ventilation duct of the main building, we should try our best to choose a larger ventilation duct. Dow Company, such a company will be more advanced in production equipment, so that the entire ventilation duct construction process can be guaranteed, because the production process directly related to the ventilation duct in the future can be good use.