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Cleanliness grade standard ISO-14644

Views:1     Author:Site Editor     Publish Time: 2019-12-05      Origin:Site

ISO-14644 is an international standard, which is now adopted by the United States, Europe, Japan, Russia, and my country. The United States originally applied the US Federal Standards 209A, B, C, D, and E, and it is no longer used in the United States. The original levels 100, 1000, 10000, and 100000 that we are familiar with are all derived from the US federal standard FS 209B, and now they are replaced by the international standard ISO-14644 standards, levels 5, 6, 7, and 8, respectively. .

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