| http://www.w3.org/ns/prov#value | - When the wafer is processed in this coating and developing processing system, in order to prevent impurities such as fine particles from adhering to the wafer, air cleaned by an air purifier or the like is supplied as down-flowing air into the coating and developing processing system, while an atmosphere inside the coating and developing system is exhausted, whereby the wafer can be processed in a
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