Natural stone tile for roofing, by the developed countries like Europe and America, the board for the sides of the natural face, hand-split blocks made from natural, low water absorption, hardness, color uniform, no spots, the service life ensure that 50 to 100 years. Other parameters are as follows: 

 1, usually for the whole rectangular shape, semi-rectangular half-chamfer. 
 Surface can be drilled nail holes, nail holes diameter is typically 4,5 mm. 
 2, common specifications 250 * 500 * 4 ~ 8,200 * 400 * 4 ~ 8mm 
 3, the packaging may only use wooden boxes can also be a small package with a cardboard box, and then packed in wooden cases, the latter method is more suitable for retailers.