Ferrocarbo Sp. z o.o.Kraków, PLScope: "...5-10; PN-EN 772-3:2000; PN-EN 772-7:2000; PN-EN 772-9:2006; PN-EN 772-11:2011; P..."PCA1certView
Polskie Centrum Badań i CertyfikacjiGdańsk, PLScope: "...EN 772-9; PN-EN 772-13; PN-EN 772-7; PN-EN 772-11; PN-EN 772-21; PN-EN 772-18; P..."PCA1certView