Ash Ma (Also known as China's Xiao-Lan Bao) is a rare domestic and foreign varieties of stone, a large area to pave and stick a very small difference, and has a special sound-absorbing function. The first choice for Dry stone wall. Finished blue plate surface covered with small black sapphire, in the sunlight, the bright flash of blue light injection, such as the bright star, also known as blue stars. Annual production of 17,000 cubic meters.