It was a task of our packaging purchasing department to harmonize the pallets in our plants around the globe as much as possible, still we have a large variety of pallets.
Pallets are just transport packaging, in rare cases it is used as sales unit, where 20 to 40 bags are shrinked together with the pallet to a bigger package that is never broken.
Using pallet as alternative unit, it is just PAL, so it does not say anything about the size and quality of the pallet.
We are producing chemicals. usually packed in drums, container and bags.
4 200 kg drums fit on a industry pallet. As we use e.g. DRM as base unit a drum, 1 PAL equal 4 DRM
Which pallet is really used is defined in automatic packing or entered manually in manual packing of goods in the delivery.