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Description du produit
Réparation & Construction /  Isolation & Colles /  Matériel Insonorisé / 
Information sur le fabricant
Société :
Changzhou Daye Tengfei Sponge Factory
 
Adresse :
A1113,8# Building, Nanyang Business Square
 
Téléphone :
+0086-519-86302982

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 when the sound waves incident into it, it can cause gaps in the air vibration; the viscous drag due to air friction and pore walls, so that a considerable part of the sound energy into heat energy has been consumed.
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