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Hydro power washing machine
Earvaipattinam Union School, Earvaipattinam, Tamil Nadu, India
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ARMY MISSILE TANK TIRANGA
Earvaipattinam Union School, Earvaipattinam, Tamil Nadu, India
India -
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Using car Battery Generators
Earvaipattinam Union School, Earvaipattinam, Tamil Nadu, India
India -