Tetra Pak International S.A. (Switzerland)
Kruger Inc. (Canada)
Amcor PLC (Switzerland)
Mondi (U.K.)
International Paper Company (U.S.)
Smurfit Kappa (U.S.)
DS Smith (U.K.)
Klabin SA (Brazil)
Rengo Co. Ltd (Japan)
WestRock Company (U.S.)