black slate 1.water absorption:less than 0.3% 2.Top ... of different kinds of color and types. 1 Product name black slate2 Optional colorblack, gray, green, dark green, blue and rusty ... size 150×300mm,150×600mm, 180×350mm,300×600mm,etc4Thickness10~80 mm, or as per customer's request 5 FinishNatural,Mushroom, Natural ... acid & heat resistance and antifreeze, easy for installation. Natural split black slate