Construction-chemicals house at Pfäffikon SZ holding 13 live VKF recognitions — eight in Untergruppe 223 Abschottungen/Durchführungen and five in 224 Fugenabdichtungen, issued between the 250xx and 325xx series. It also fronts the Swiss approvals for Mercor Dunamenti’s firestop range, so its register entry covers both its own formulations and a licensed system.