USA Waupaca Gusmer Enterprises Inc., Filter Materials Producers of pulp, mechanical pulp, paper and board · Suppliers Rag papers · Impregnating base · Filtermass · Filter papers · Blotting papers
Germany Annweiler am Trifels Papierfabrik Poerringer GmbH & Co KG, Teil der Macherey-Nagel GmbH & Co. KG Producers of pulp, mechanical pulp, paper and board · Paper and board converters Filtermass · Filter board · Filter papers · Round and folding filters