Decrease of dust by pressurizing clean air

In order to maintain the air at the factory clean and decrease the dust content, the method of supplying filtered outdoor air with a compressor to maintain the factory at a pressurized state would be effective. In this method, dust traps, air curtains, and plastic curtains are provided to minimize the intrusion of dust. This enables the count of suspended dust particles of 0.5 um or larger at the factory to be suppressed to 1/5 times as low as the corresponding count in outdoor air.

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