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JIS B 9920: Classification of air cleanliness for cleanrooms

In order to promote public education and public safety, equal justice for all, a better informed citizenry, the rule of law, world trade and world peace, this legal document is hereby made available on a noncommercial basis, as it is the right of all humans to know and speak the laws that govern them. (For more information: 12 Tables of Code ) Name of Legally Binding Document: JIS B 9920: Classification of air cleanliness for cleanrooms Name of Standards Organization: Japan Standards Association (JSA) LEGALLY BINDING DOCUMENT

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