Plywood is produced in a variety of grades in china, divided these grades can help us know the plywood quality and its uses.
Common types of plywood grade:
Marine grade plywood
Marine grade plywood has several advantages. The grading system is a bit different and if you want to get the very best, look for the AA grade. It is stronger, denser and more resistant to water damage because of the waterproof glue that it is constructed with. This type of wood panel is more highly resistant to separation and it lasts longer in warm and moist climates. It’s also easier to cut and sand with cleaner edges.
MR stands for 'Moisture Resistant' plywood. Its also known as commercial plywood and is used for making home and office furniture. Medium density fiberboard is an engineered wood product made from wood fibers, combined with wax and resin binders under pressure and high temperature.
BWR grade plywood
BWR grade plywood means Boiling Water Resistant plywood. It is a waterproof plywood same with WBP plywood. It is widely used for making furniture.