China black Stone staircase step is a very common application of stone, Hebei is China's largest production of black stone provinces, from the beginning of mining to export has been made a good reputation, Chinese black stone is a kind of granite, texture is relatively hard, for example, if you use a common knife, you can not mark the imprint, with the industry's professional terms, to achieve the hardness of 7, and its voice is more special, tapping will emit metal sound.
Chinese black stone can be processed as a variety of finished products, for example, Taiwan Panel, indoor field surface, wall, large stone floor, tombstone, craft block stone, measuring platform, etc., China's black stone staircase step is one of them.