Tri-dimension composite geonet for drainage Specifications: core thickness: 5 mm - 8 mm; Width: 2 - 4m, composite geotextile: short fiber needle punched geotextile, filament spunbonded needle punched geotextile, the length at request. Typical Application: drainage in landfill; roadbed; railway,tunnel,underground structure,the retaining back wall, gardens and sports grounds. Features： Excellent drainage function, can bear long time hige press load High tensile and shear strength Reduce the rate geotextile embedding into the core of geonet, can protect long time stable water conductivity Tri-dimension composite geonet for drainage can bear more than kpa compression load Its anti-compression capacity is much larger than common geonet for drainage. Properties: Tri-dimension composite geonet for drainage is made of a unique tri-dimension geonet coated with geotextile on both sides. It has the property of geotextile(filtration) and geonet (drainage and protection) and provide a function system of“filtration-drainage-protection”. The tri-dimension structure can bear higher load in construction and remain certain thickness,strength and excellent in water conductivity.