Cardboard boxes are a really big deal in the U.S. Amazon alone shipped over 5 billion packages through Prime in 2017. But as Amazon moves to plastic mailers and paper mailers the corrugated box market is bracing for the fallout.

There are other players in the space but today the four big cardboard box manufacturers that dominate the market are International Paper, WestRock, Packaging Corporation of America and Georgia-Pacific.

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The Business Of Amazon Shipping Boxes