All natural material from the natural quarry . China is the country which rich in natural stone quarry resource. the quarry can be sort as : granite quarry. marble quarry . basalt quarry ( it come from volcano erupt ) , limestone quarry , sandstone quarry, slate quarry..... some quarry are on the ground ....some is deep in the ground . some quarry can be get large block . some can only take small block........all the material character and quality were due to the quarry itself . first the people find the quarry .then test the material . and then take the block from the quarry then move to the factory to cutting and process in all sorts of production