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¡¡¡¡2500 years ago, The ancient Egyptian made curtain by weaving the reeds. They then added water on curtain surface to cool the indoor air according to the theory of Air Convection and water evaporation. This was the earliest evaporative cooling pad we¡¯ve found ever since.¡¡
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¡¡¡¡The American used wood wool as evaporative cooling pad in the 19th century
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¡¡¡¡In 1970s, scientist and entrepreneur Carl Munters invented paper cooling pad. From then on, People began to develop energy-saving and environ-mentally friendly equipment on the basis of evaporative cooling pad.
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¡¡¡¡In the 1980s,our country began to import cooling pad which can be widely used in agricultural production.
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