Key Players (this may not be a complete list and extra companies can be added upon request):
3M
Ahlstrom-Munksj?
Aim Nonwovens and Interiors Private Limited
Air filters Inc.
Cabot Corporation
Calgon Carbon Corporation
Clean & Science
Donaldson Company Inc.
Elta Group
Hollingsworth & Vose
Innovatec
Irema
Johns Manville
Lydall Inc.
P. H. Glatfelter Company
Permatron Corporation
Porvair Filtration Group
Sandler
Schweitzer-Mauduit International Inc.
Superior Felt and Filtration
LLC
Toray