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1.With recycled materials,this type of Sound Barrier indeed havs done something good to the enviroment protection.
2.High quality with competitive price,and specially proper to be used along both sides of the expreess way to proof the noises.
3.about 1.45 meter long,0.55 meter wide and 14.5CM thick, which can be adjusted according customer's demand
Handsome Sound Barriers-1