plastic wood wpc flower box: 1.Eco-friendly 2.waterproof,fireproof 3.colour available 4.CE,ISO,SGS passed The comparison between WPC and WOOD Characteristic WPC Wood Moisture ResistanceWaterproofwater absorptiveRot ResistanceAnti corrosion Rot except special treatingSplit ResistanceNo CrackedCracked by weathering effectDistortion ResistanceAlmost no Contraction/expansionDistorting effected by ...