EN 12407:2019 Natural stone test methods - Petrographic examination
EN 12670:2001 Natural stone - Terminology
EN 1469:2015 Natural stone products - Slabs for cladding - Requirements
EN 12407:2019 Natural stone test methods - Petrographic examination
EN 12670:2001 Natural stone - Terminology
EN 1469:2015 Natural stone products - Slabs for cladding - Requirements