Ku United States, mpaka kumapeto kwa November 2001, Federal Standard 209E (FED-STD-209E) inagwiritsidwa ntchito kufotokoza zofunikira pazipinda zaukhondo. Pa November 29, 2001, miyezo imeneyi inasinthidwa ndi kusindikizidwa kwa ISO Specification 14644-1. Nthawi zambiri, chipinda choyera chimagwiritsidwa ntchito ...
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