Original Yunnan, China. It is famous for its pure white with bright, plumb, large size, soft when tasted. Special growing conditions are requested. The bean was growing on tableland (level is 2000-3000 meters), the larger difference of temperatures, shine longer, like dry and endure cool. The product is just only in western, middle and eastern of Yunnan can meet product requests. The amount of product is 25000-30000 tons per year. The export product is 18000 tons per year. The kind of product is main economic plant in Yunnan.