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結果 : what is fire extinguisher composed of
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How Fire Extinguishers are Made? I Production of Fire Extinguisher

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what is in a fire extinguisher

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How to Use a Fire Extinguisher

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AMFE - HOW DOES THE AUTOMATIC MINIATURE FIRE EXTINGUISHER WORK?

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Using Sound as a Fire Extinguisher

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WATCH this before using a CO2 fire extinguisher!!!

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What's inside a Fire Extinguisher?

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How to use Fire Extinguisher

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