black and clear construction geomembrane,made of LDPE, LLDPE,good tensile stretch, elongation, tear resistance LDPE, HDPE,LLDPE construction films for waterproof , ... breakage, etc.Material: recycled LDPE,HDPE,LLDPE OR MIX. content.Thickness: 4mil, 6mil, 8mil, 10mil. ... , puncture resistance, excellent elongation and break at tear . black HDPE,LDPE construction film