... alkali and oil 2) octagonal box with no smell attracting.good fire-resista Name : cavity box /octagonal box 1) Thickness:1.5mm2) Specifications ... )Good insulation property, good combustion-resestant sizes : 4"x2" box , 3x20mm hose in long sides, 1x20mm in short sides, ... in bottom . material : pvc , 200pcs for export cartons . octagonal box , sizes : 4"x4", 100pcs for export cartons, 20pakages for inner ...