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A kind of LED illumination lamp of DC/DC conversion
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Charger of lithium battery
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Simple nickel-cadmium battery charger
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A kind of touch control switch of LED illumination lamp
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The LED illumination lamp that a kind of direct current DC/DC drives
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A kind of easy mobile phone, the charger of flash-light battery
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Minitype gas leakage alarm device
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Cattle feed increasing dairy cattle milk yield
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Cattle feed for preventing dairy cattle summer syndromes
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High-nutrition cow feed
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Milk cow feed
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Feed for preventing lactating cattle mastitis
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