Происхождение товара
Guangdong, China
Material
macromolecule material,metal poeder,other accessory ingredient
Size
1200*10000 mm*1.2 mm/2 mm,1200*5000 mm*3 mm
Density
20 kg/m3,33 kg/m3,28 kg/m3
Feature
sound insulation,durable,environmental
Acoustic coefficient
27db-32db