Stackable Pallets — Cross pallets, Frame pallets

Front of Frame Pallets, Cross Pallets

Full-perimeter pallets

Physical picture

Frame Pallets

Flat Pallets, Hygienic Pallets

Compare with Reversible Pallets

Both are without steel pipes, and stack on the cargo well.
Load of [Reversible pallets] is better than [Cross pallets]

[Cross pallets] work well with most types of mechanical handling systems
Manual hydraulic forklift is feasible