Source of inspiration for the Romans, Chinese roofs made of bamboo trimmed. They conical shape and easy to fit together. Subsequently invented arc of clay tiles of the “channel”.
The appearance of the rock is variable depending on the location from which it comes, and also the position of the mining deposit. The color is usually slate gray to gray-black. Shine slate is generally fine pearl and silk.
In Asia, bamboo is one of the basic building materials. And thanks to its properties, which are the unique structure of the woody fiber containing lignin, cellulose, as well as silicic acid, which gives bamboo hardness of steel.