<https://sklep.ceramed.pl/product/emil-ceramica-viva-perla-narcis-60x120-polysk-full-lappato/#product>
<http://schema.org/sku>
"4156"^^<http://www.w3.org/2001/XMLSchema#integer>
<https://sklep.ceramed.pl/product/emil-ceramica-viva-perla-narcis-60x120-polysk-full-lappato/>