1. The board top is not less than 4mm mdf packing board, the bottom is not less than 15mm mdf packing board, the other sides are not less than 4mm mdf packing board, inner with plastic bag, 4*8 steel straps.
2. Loose Packing.
https://www.fiberboardchina.com/packing-plywood/container-floor-plywood/4-x-8-x-18mm-container-floor-plywood.html