Soundproof / insulator felt 7mm, 1 meter wide. Sold by the linear meter
toile feutre thibaude 100 par 200 cm 7 mm gris chiné isolant phonique | eBay
Processes | Free Full-Text | Factors That Control the Reservoir Quality of the Carboniferous–Permian Tight Sandstones in the Shilounan Block, Ordos Basin