1. Flexibility: Immediate flexion can prevent the goods on the pallet from being scattered when picked up by the forklift; 2. Bend: plastic tray is placed on the shelf, the bending will gradually increase in the automatic warehouse can not bend more than ten millimeters; 3. Impact resistance and durability; 4. Usability: light weight, simple operation, easy access to forklifts, stable size; 5. Dynamic load: the maximum weight that can be lifted by the forklift at one time; static load: the maximum weight that the lowest pallet can withstand in the pallet; overhead load: allow the pallet-packed goods to be on the shelf The maximum weight. The load is different with the shelf, temperature and storage period are closely related; 6. Health: do not rot, do not absorb moisture, easy to wash, easy to dry, no insects and bacteria; 7. Safety: light weight, no nails, protrusions; 8. Long service life, recyclable.