The new Surface Pro(2017) accounts for 9.2%, roughly the total of the Surface Book(7.5%) and the Surface Laptop (2.0%). On December 15th, just a day after the listing, Longfin announced that it was buying Ziddu.com, a singapore-based blockchain, with the shares of Longfin soaring in the face of a digital currency frenzy recently represented by bitcoin. Interest rates are an important tool for regulating monetary policy, and they are also used to control economic growth, such as investment, inflation and unemployment. Reasonable interest rate plays an important role in the economic leverage of social credit and interest rate.