BPM Composite Geonet is a two or three-layer three-dimensional drainage geosynthetic product. It consists of a geonet core and heat-bonded nonwoven geotextile on both sides or one side.The geonet is manufactured from high quality polyethyle resin,contain 2-3% carbon black,anti-UV and anti-oxidant ,processed by special extruding technology,with good drainage performance.