The annual Rubber & Plastics News ranking of the top 50 North American rubber product manufacturers is the product of several research tools.
The financial information is derived from a questionnaire sent to about 75 companies, via annual reports and a variety of financial documents, and from various industry sources. The firms all have a North American manufacturing presence, and the rankings are based on rubber product sales on the continent.
Data for the rankings of the world's top 50 non-tire rubber product makers is compiled by Rubber & Plastics News, Tire Business and European Rubber Journal.
If you believe your company should have been included in the rankings—or you know of a rubber firm that may qualify—please send an email to Bruce Meyer, RPN executive editor, at firstname.lastname@example.org.