AF Systems manufactures passive fire protection for service penetrations, linear joints, cable trays, ducts and perimeter seals from Mulazzano in the Lodigiano, and supplies and installs them. Its AF Collar firestop collar holds European Technical Assessment ETA_16_0891 and is classified EI 240 on rigid walls and floors and EI 120 on drywall, cross-laminated timber, self-supporting partitions and sandwich walls, tested to EN 1366-3; the product page cites the underlying Istituto Giordano classification reports IG 303373-3516FR and IG 318249-3678FR. The firm additionally holds ETA 26/0091 for its AF Graphit Foam penetration-sealing system, and European Technical Assessment cover for AF Joint, classified EI 180 to EN 13501-2 after testing to EN 1366-4.