we offer roofing slate tile under below size 300x600x5-7mm 500x250x5-7mm 450x250x5-7mm 300x300x5-7mm 400x250x5-7mm 400x200x5-7mm color is black, blue and grey . you can load about 1000m2 in a 20 ft container. also we offer mushroom slate, culture slate, nature slate for exterior claddding decoration. granite tile, marble tile , pebble tile, mosaic tile, pattern tile, etc. the color of slate is more and surface is different . the size are to your customized size. for more detail pls visit on http://www.stone-export.com and contact me via bk@stone-export.com . thanks !