hollow grid board production line 1.used for building,decorating,and packing,etc ... thickness is 2~16 PC PP PE hollow grid board production line1.used for building,decorating,and packing,etc2 ... is applicable to produce PC,PP,PE hollow profile board.2. The products is used widely for building, ... road noise isolation and packing.3. PP hollow profile board can instead of carton which have feature like light ...