What is the noise standard of 5000 new fans?

60 dB. According to the Inquirer in Baba official website, the noise value of fan casing should meet the following requirements: air volume 2000-3000m/h, noise value not more than 55dB(A), air volume 300 1-5000m/h, noise value not more than 60dB(A) and air volume 500/kloc-. The new fan is an effective air purification equipment, which can circulate indoor air.

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