There is no risk of this arbitrage. Range and once the two currencies yield, the yield of arbitrage mechanism will make two currencies are equal, that is, different interest rates in the currency of the country there is inherently a trend towards an equalization and trend, it is the interest rate index key aspects of the impact of foreign exchange to, also is our interpretation and grasp the key interest rate index. Data released by the American petroleum institute (API) showed that U.S. crude oil inventories fell 5.2 million barrels in the week ended Dec. 15, down from an expected 35.18 million barrels. Refinery inventories fell more than expected, while gasoline inventories rose, but were less than expected. The overall API data is good and good for oil prices. On the basis of introducing marginal concepts and mathematical argumentation, neoclassical has established a formal "perfect" mathematical model for the neoclassical "laissez-faire order" : general equilibrium. The price is the most important independent variable in this model, which can also be called price mechanism. The process of achieving general equilibrium is also a process of social resources guiding the flow of prices, so the price mechanism regulates the allocation of social resources. To avoid huge core technology in the form with the original electronic chemical materials business competition, the company also announced the proposed wholly owned subsidiary of zhejiang KaiSheng fluorine chemical 100% equity and zhejiang borui electronic science and technology of 100% equity as a target for public stock transfer, the listed price is RMB 940 million. And originally borui company and responsible for implementing the 2016 KaiSheng non-public stock high purity electronic gas project (phase 1, 2), and fluoride special gas project will be sold with borui company equity transfer at the same time, the company will the three offering investment project has been used and the rest of the fund-raising (through borui back after the company equity transfer and interest) added $1.09 billion permanent JuHua stock liquidity. Keynes argued that savings and investment were two interdependent variables, not two independent variables. Suppose a speculator decides to enter the foreign exchange futures market. He is going to take out $10,000 to speculate. He selected the broker bank and registered representative, opened an account, and deposited the money. To be on the safe side, he decided to do sterling business first and then gain some experience before entering other markets.