Ponena za mfundo zachitetezo cha vacuum cleaner, dziko langa, Japan, South Korea, Australia, ndi New Zealand onse akutsatira mfundo zachitetezo za International Electrotechnical Commission (IEC) IEC 60335-1 ndi IEC 60335-2-2; United States ndi Canada atengera UL 1017 "Otsukira utupu ...
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