A yawancin taro, sau da yawa ba za mu iya sanin ko wane ne gilashin ruwa da muka yi amfani da shi ba.Hasken hasken wuta na LED zai iya magance matsalar.LED ana kiransa tushen haske na ƙarni na huɗu.Yana da halaye na ceton makamashi, kariyar muhalli, aminci, tsawon rai, ƙarancin wutar lantarki, ƙarancin zafi, ...
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