Khoom noj khoom haus: Stackable khoom xws li thawv thawv.
XY txav system: thauj khoom mus rau qhov chaw pallet.
Z txav system: txav cov khoom nce thiab nqis.
Rotation pick-up: rub thiab tig qhov khoom.
Pallet tawm-piv: Tag nrho cov stacked pallet tawm.