May 01, 1997 · Air filter media, Bag filters (dust). AAF International BV Egelenburg 2, PO Box 7928, NL1008 AC Amsterdam, The Netherlands. Tel: +31 20 549 4411, Fax: +31 20 644 4398. Air filter media, Bag filters (dust). AAF Ltd Bassington Lane, Cramlington, Northumberland NE23 8AF, UK. Tel: +44 1670 713477, Fax: +44 1670 714370.