Profits of socialism and capitalism have substaintial distinction, is it to create value for the society, in order to expand socialist reproduction and improve people's living conditions, is the socialist accumulation and the main source of social consumption funds, is to measure and evaluate enterprises an important indicator of economic activity. The importance of gasoline was not recognized in the 19th century, when it was used in a great deal of kerosene. The oil refining then relied on simple distillation processes to separate the different components of the oil from the boiling point. The boiling point of the kerosene component is higher, and the use of safety when lighting lamps becomes the main product of crude oil refining, while gasoline and other components are often burned as fuel. By the mid - to late 19th century, the successful use of gasoline engines in 1886, in 1886, the gasoline engine was successfully used as a driving force, thus the importance of gasoline increased. But using distillation, only 20% of the gasoline can be extracted from crude oil. In 1911, the standard oil company have solved the problem of low gasoline yield, by William burton and Robert hamm forest thermal cracking process of the invention, the heavy quality heating gas oil cracking of light gasoline fractions, such as to overall improve the gasoline yield, thermal cracking process in 1913 won the patent license in the United States. The subsequent catalytic cracking process has further improved the gasoline yield and octane value. Euroglaze trade customers are seeing returns on the company’s ongoing marketing investment, with leads generated now being distributed directly to them. In the fifth stage, the national standard of motor vehicle gasoline is equivalent to the current standard in Europe, which meets the requirements of the standard of gasoline vehicle pollutant emission in the fifth stage. According to the ministry of reform, the ministry of finance and the ministry of environmental protection, the ministry of environmental protection and the ministry of environmental protection issued a notice on the issuance of a plan for the upgrading of refined oil products, and expanded the scope of the implementation of the five standards of automobile and diesel oil. Starting from January 1, 2016, China's eastern region is fully supplied with five standard vehicle gasoline (including E10 ethanol gasoline). Starting from January 1, 2017, the nationwide supply of motor vehicles (including E10 ethanol gasoline) that meet the standard of China's fifth standard will be fully supplied, while the domestic sales of the five standard vehicles will be stopped at the same time. The optimal combination of benefits and risks is the best combination of benefits and risks. If the benefit is certain, the risk is minimized; Of the companies surveyed, 37 percent said sales rose in December, while 17 percent said sales were down. The resulting balance is + 20% below the retailer's forecast of + 30%, and below + 26% in November. To read more