PP Plastic Board,corrugated plastic board Colorful PP Plastic Hollow Plate/Board/Crate Innocuity,flavorlessness,moisture proof 1. material:plastic hollow plate(PP plastic sheet) which is a kind of new green packing material and is used widely in construction decorating ,advertisement demonstration ,packing and other fileds .It has the features:innocuity,flavoriessness ,moisture proof ,corrosion ...