Ƙofar hana gobara ta UL tana nufin daidaitaccen kofa mai hana wuta ta Amurka, wacce za ta iya biyan buƙatun kwanciyar hankali na juriyar wuta, mutunci da rufin zafi a cikin wani ɗan lokaci. Ƙofofin ƙofofin wuta na UL za a kiyaye su kuma ba tare da lalata ba (gwajin wuta da tasirin ruwa).

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