Where does the noise in the factory mainly come from?

Industrial machinery noise. This is the main source of indoor noise pollution. Due to the impact, friction, jet and vibration generated by various power machines and working machines, sounds above 70 to 80 decibels can be generated. The noise of textile workshop, forging workshop, crushing workshop, steel mill, cement plant, air pump room and water pump room is quite large. Although they have done some noise reduction, they still can't fundamentally eliminate the noise generated by the machine itself.

The purpose of noise reduction can be achieved by installing sound-proof doors, sound-proof windows, sound-proof barriers, silencers, sound-proof louvers, sound-proof felt and other products.