1.Size:15.5x1x14.5cm 2.Material:slate 3.packing:1pc/inner box 4.MOQ: ... and International standard2. Handcrafted from top quality slate or ceramic or glass3. Shapes of slate : square, rectangle, circular, triangular4. A ... acid and pollutants6:Easy to keep clean: To clean slate,simply wipe over with a damp cloth or wash ... be rubbed on the surface of your slate in the future to enhance its natural contours ...