Multi Ply:
This is the most important category in plywoods list. In spite of 3 and 5 Ply, multi ply will be better and efficient.

If the layer of the plywood crosses more than 5 then it is considered as multi ply. Some of the examples of multi ply are 7 Layer, 9 Layer, 11 Layer and 13 layer.

These plywoods are very hard and give better wood strength. Interior designers and architects use these multi ply to make bed cot, dividers, doors, exterior dividers and decorations as well.