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varnish is originated from latin word meaning resin.it is a protective layer applied mostly on woods and other materials also.it is a mixture of dry oil,resin and thinner or solvent..mainly it gets harden when evaporation takes place or reaction between oil and oxygen occurs,it gives glossy look to the material and protect it from dirt,grease.moisture and humidity.they are of two types-natural and synthetic.

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14y ago

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