There are three main producing areas of ice drift, Diebu, Gansu (the output is scarce now, almost none), Liangshan, Sichuan and Baoshan, Yunnan. The most common materials on the market now are Liangshan Nanhong and Baoshan. As for the suggestion of material selection, men like Liangshan Jiukouxian, and Waxi Xianxian is the majority, which can not only enhance men's charm, but also show calmness.