Tested in the natural stone laboratory of the "Centro Tecnologico del Marmol" in Murcia (Spain). Tested in "Alicante University Laboratory" (Spain).
With the declaration of conformity is declared that the marketed product is in compliance with the regulatory requirements of the harmonized standards or technical specifications, depending on the application and intended use of the product, according to the Construction Products Directive89/106 / EEC.
ASTM (American Society for Testing and Materials), is the institution that is responsible for developing the rules of testing and characterization of materials in the United States, setting minimum requirements for the intended uses of each material.