... slate,walling decorative. The culture slate can be used for villas,high-end residential,commercial streets,parks and other building ... :black, yellow, rusty, green, grey; according to your preference 5.Surface finish: flat surface, rock face, cleft face, rough face ... 10-20)mm, 6 pieces/carton, 40 cartons/wooden case, 28 wooden cases/container; 8.Test item: Type of TestUnitsActual ValuesRequired Values ...