CUPA 13 is a blue black slate with a smooth surface. Split to an average thickness of 3.5 and 5mm. ORIGIN: Sotillo Quarry. Benuza (Leon), Spain. In operation since 1995. PRODUCTION: 9,000 tons/year. FORMATS: Rectangular & Rounded. SIZE: (cm) Between 25x15 & 50x25, according to formats.
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