materials: natural slate 1) Color: rustic, black, blue/black,green rustic, china green,white grey,apple green and yellow. 2)FLOORING Size: 10x10cm, 30x30 cm, 40x40 cm, 60x60 cm etc. Thickness: 1.0cm, 1.2cm, 1.5cm, 2.0cm, 3.0cm. Roofing slate size:30*60,50*25,40*25,40*20,30*30,40*30,etc Thickness: 0.4-0.7,0.5-0.8,0.8-1.0,1.2-1.5CM 4) Surface: natural face, back honed 5) Package: Wooden crate or cartons with foam 6) Supply ability: 3000~5000 m2/month 7) Quality control: ISO 9001:2000 certificate Surface finished kinds for choicing: 1. Top side riven, back side calibrated. Thickness tolerance +/- 1.5mm; 2. Top side honed, back side calibrated. Thickness tolerance +/-1mm; 3. Both side riven, Thickness tolerance +/-2.5mm; For more information please visit our website.