Geomembranes of the GMM brand are intended for use as a waterproofing layer. They are made of high-density polyethylene HDPE or linear low-density polyethylene LLDPE.Geomembranes of the GMM brand are divided according to the type of design: smooth ("Smooth"), smooth with a signal layer ("Signal"), composite ("Composite") and textured ("Textured"). Textured geomembrane is divided into rough texture (R) and spike-shaped texture (S) based on the textured surface.