| 摘要 |
The present invention includes a rectangular base positioned on the edge of a packing box; a branch pipe insertion unit in which a branch pipe is inserted and protruding from the top surface of the base by an arc shape; and a pair of box insertion units which formed on the outer side of the base and is in contact with the inner periphery or the outer periphery of the box and which the box is received so that lots of cargos can be stacked and corrosion resistance is reinforced as air is smoothly circulated from the outside to the inside. |
