... ,wall,roof,paving 2.sizes as per clients' request 3.color:black,rust,brown,etc. Slate as a kind of construction ... slate,etc.Floor slate specification:1.avalable color: black, green ,grey, rusty, yellow, brown ,mixed color, etc.2.Thickness:9-11mm,11-13mm ... or accept to custom-made according to special requst.2.Normal sizes:200x200mm,320x320mm,400x200mm,400x250mm,500x250mm,ect.(or clients' request ...