We supply 20mm and 30mm thick big random slab. As the slab piece is cut from natural stone block, the actual slab size is depended upon different stone characters(conditions) from different natural stone materials. However, we always try to ensure the largest slab size as possible.Besides,We supply thin stone tiles in standard size as below:1) Product: China Granite Tiles.2) Place of Origin: China.3) Granite color:G603/G684/G682/G636/G654/G666/Absolute Black and supply these 6 stone with very competitive price.4) Finish: polished, honed, flamed, bush-hammered. 5) Sizes available:a) 300 x 300mm (12" x 12"), 300 x 600mm (12" x 24").b) 400 x 400mm (18" x 18").c) 600 x 600mm (24" x 24"), 600x900mm (24" x 36").d)Cut-to-size or other customized sizes are available. 6) Thickness: 1cm, 1.2cm, 1.5cm, 2cm, 3cm.7)Packing:Inner packing: foam(styrofoam) boxes,Out packing:seaworthy wooden crates.