Ki fonksyon machin ki enpemeyab?
Adezif mete ak kouch ki enpemeyab (ki gen ladan asid acrylic, JS ki enpemeyab kouch, polyuretane, elatriye) ka flite. Materyel yo fireproof ak materyel anti-korozyon. Gypsum, doub poud, nwa ak siman blan, elatriye ka flite tou!
