... of ASTM and EN standard. 3. Size 200*400/250*400/400*400 Natural Roofing slate (roof tile) 1.Natural finish.a little ... 200/400*250/500*250/300*200Square, rectangle, pentagonal, rhombic 3.Slate application: Indoor and Outdoor decoration, Garden, Villa wall ... and etc. 5.Slate pattern: slate tile, slate floor(paving stone), wall tile (ledge stone), mosaic tile, floor mat (flagmat stone), tumbled stone ...