Finally, the third element, loading sequence, is generated by the
arrangement of items inside. According to the coordinates of the
six tea boxes in the containers, the loading sequence from the proposed
heuristic (as shown in Fig. 3) determined the arrangement of
boxes inside. The sequence of loading/picking is prioritized by zaxis,
y-axis, and x-axis coordinates, respectively. A summarized
solution is presented in Table 2. The order is completed with a
combined picking and packing operation.