... 2 anti-Mold/Moist 3environment friendly 4 easy resin bonding 5 sound and vibration dampeni PP honeycomb is a new ... arrival core material can be classified into two kinds: cell open and with polyester tissue.Light weight, high compressive strength, anti-water ... , bridge, truck body, building, FRP and so on. PP honeycomb core Specification: Dimension, ... sandwich structure lightweight and water proof