What is the difference between a good quality pallet and a bad pallet?

Brick machine PVC plastic pallets Good board and poor quality pallet difference

Concrete brick machine pvc plastic pallet good board and poor quality of the difference between the pallet:

Good pallet: choose a material, the use of three-roll molding, to ensure quality.

Poor quality board: adding an excessive amount of stone powder, with more impurities with three materials.