- direct factory -specialize in slab,tile,stairs -mainly in middle east,africa market -staircase design is our strong 1.Product information1.Stone name:G687 G664 G635 G636 G603 G623 G640 G439 G562 G654 G696 G681 G682 G611 G617 xili red, sanbao red, ice blue and kinds of black granite2.Color: white,grey,red,black,blue,yellow3.Standard Dimension:100-150x30-35cm,100-150x15-30cm as per your drawing4. ...