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As we spend 60-90 % of our times in indoor spaces, the quality or inferiority of the indoor air is directly proportional to our life quality. The measurements made by the American Environment Protection Association (EPA) suggest that the indoor air quality even in the isolated smart building is 70 times dangerous than the outdoor air quality........
The dust and dirt particles in the ventilation ducts that are not cleaned result quicker contamination of the filters in the air conditioning centres and earlier finishing of the service life. Moreover the particles absorbed by the duct surfaces accumulate time to time and cause serious surface roughness.