Despite the exploitation of labor force, selling unqualified products is an illegal method to make profits. /Regardless of falling short for standard, some firms have falsified products with rude and coarse ingredient. What's more, they immorally and intentionally manufacture products by damaging human body. /For instance, Sanlu, Chinese dairy company, is notorious for the excessive amount of detrimental ingredients in milk instead of nutritional ones. Numerous cases of severe damage to babies have boiled the whole country into anger. The Sanlu transformed from high-profit to breakdown overnight. The success depending on the fraud on products will collapse sooner or later. The American petroleum institute (API) released data showing a decline in U.S. crude oil and refined refining inventories, while gasoline inventories rose. At present, countries around the world is frequent use of interest rate leverage to implement macro-control, interest rate policy has become a central bank to control money supply and demand, and a major means of regulating economic, interest rate policy in the position in the central bank's monetary policy more and more important. Leakage may occur at the interface of the gasoline pipe, which leads to the use of the air conditioning system into the vehicle. If the owner found the car fumes, deal with gasoline pipeline - open interface to check engine hatch, it is easy to discern does the interface of gas leakage, for a period of time after the leakage surface will appear a layer of oil sludge. If the leakage of the gasoline pipe is found, the interface should be tightened or repaired. The first wedge-shaped car was made in 1963, and the car was highly regarded as an expert in car shape design. In 1968, gm's Ozzie toronado improved and developed the wedge-shaped car, and in 1968, it was adopted by the Cadillac premium sedan, eldo. Wedges are widely used in racing cars. Because the car first considers the influence of fluid mechanics (aerodynamics) and other issues on the automobile, the body can be made entirely by wedge, while the ride comfort is considered as a secondary consideration. Like the Italian ferrari in the 1980s, it was a typical wedge shape. Wedge shape for currently considering the high-speed car, whether from the aspects of its modelling concise, move feeling, or from its embodiment of aerodynamics, are conform to the requirements of the modern people's subjective, with a strong contemporary breath, give a person with beautiful enjoyment and speed fast. Japan's Toyota motor co., the MR2, is an engine sports car (the tail is fitted with a flexible flow board) that can be called a car in a wedge car.