A multi-cell partition includes a panel defining first, second and third fold lines between opposing ends thereof, with the third fold line between the first and second fold lines, and at least one elongated cross wall coupled to and between opposing panel sides and defining a fourth fold line. The partition has a closed position with the panel folded along the third fold line and unfolded along the first and second fold lines and with the at least one elongated side wall folded along the fourth fold line and at least partially disposed between the folded panel, and an open position with the panel unfolded along the third fold line and folded along the first and second fold lines to form a pair of upstanding side walls with the at least one elongated side wall unfolded along the fourth fold line and extending between the upstanding side walls.

A packing box including lattice members which are arranged in a stacked state into stages, a stage-partition plate which is arranged between the stages of the lattice members, two or more inner tubular-trunk frames which are provided in a stacking direction of the lattice members to surround one or more stages of the lattice members, an outer tubular-trunk frame surrounding an outside of two or more stages of the inner tubular-trunk frames, a bottom lid which is arranged under the outer tubular-trunk frame, and a top lid which is arranged on the outer tubular-trunk frame.

A partitioned container having a self-locking access portion and further having a plurality of individual compartments formed from mated slotted interior panels. One or more exterior panels surround the mated interior panels to form the outside of the partitioned container. The interior panels may include folding tab sections and partitioning sections, and the panels may be mated with one another. The exterior panel(s) may comprise a plurality of sub-panels configured to reinforce the container and interlock with one another. The various panels may be folded about fold lines to permit the assembly to be folded into a substantially flat state.