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; Wooden crate or cartons with foam