shanxi black granite (Tiles, slabs, stairs,etc)One of our main products, we can offer you good quality, competitive price with steady quantity.1)Standard Dimension:Tiles:305 x 305 x 10mm 12 x 12 x 3/8 457 x 457 x 12mm 18 x 18 x 1/2 400 x 400 x 12mm 16 x 16 x 1/2 300 x 600 x 12mm 12 x 24 x 1/2 400 x 400 x 20mm 16 x 24 x 3/4 300 x 600 x 20mm 12 x 24 x 3/4 400 x 600 x 20mm 16 x 24 x 3/4 600 x 600 x 20mm 12 x 24 x3/4 Slab: 240up x 120upTombstone: 180x60x3cm , 180x60x4cm , 150x50x3cm ,120x60x3cm , 90x60x3cmStairs:Step: (90-160) x 33 x 2.5/3cm Riser: (90-160) x 14 x 2.5/3cm OEM service 2)Surfaced Finished:Polished, flamed, honed, bushhammered, sandblasted, Antique, etc.3)Edge Finished:Polished with double bullnosed, rounded, bevel, chamfered. Etc4)Common Packing :Inner Packing -cartons or polystyreneOuter Packing - Wooden crates5)Quality control:Polished degree : Above 85 degrees,Thickness Tolerance :+/-0.5mm for 1mm tiles ; +/-1mm for above 2cm tiles.It is suitable for slabs, tiles, paving stone, kerbstone, countertop, vanitytop, kitchentop, benchtop, stair, step, fllooring tiles etcPlease feel free to contact me with 0086-13720894284(Mr alex Ji) for more information if you are interested in our products