Before that, what is the nature of the enterprise itself is an issue that has been ignored by traditional microeconomic theory. In the traditional microeconomic theory, is the manufacturer's production process as a "black box", namely enterprise is abstracted into a from input to output a "black box" of the pursuit of profit maximization. Gasoline sales in the United States are mainly due to competitive gasoline prices and rising fuel efficiency, with a high seasonal impact. Population and cultural factors are also important factors that influence the trend of gasoline consumption in the United States, according to Jill Mislinski, an analyst with Advisor Perspectives. In the 18th century, the western countries successively carried out the industrial revolution, the universal adoption of large machinery, laid the foundation for the establishment of factory system. In 1771, British man Richard arkwright1732-1792 founded the first cotton-yarn factory in the city of kron. In the 1930s and 1940s, the factory system was established in Britain, Germany and other countries. The main sex of factory system is: to carry out large-scale intensive labor; Using big machine to improve efficiency production; Implement the employment system; The division of labor is deepening and production is socialized. The establishment of factory system marks the real birth of enterprises. In the early hours of Wednesday, crude oil inventories were down (though gasoline inventories rose), boosting U.S. oil prices, according to zero hedge, a leading financial blog. But oil inventories in the EIA fell by five weeks, while gasoline inventories rose in six weeks and oil prices were volatile. In addition, us crude oil output was at a record high. Currently, us oil is trading at $57.56. The oil was trading at $63.95, up 0.25%. Offering exceptional thermal efficiency, build quality, and desirable minimalist aesthetics, Üni_Slide can achieve frame sightlines as slim as 20mm, and a slim central interlock, while being able to support sliding panels of up to 3m high and 2.2m wide. The product can be assembled in a limitless run of units, with each panel capable of holding up to 320kg of glass. Meet with difficulties, clothing retailers in October and November for coat and knitwear sales was blocked by the untimely warm weather, while the housing market slowdown means DIY furniture chain and tough times. The diversity of creators and the regulation of innovative and friendly regulation is essential to the establishment of a mechanism for equality and human rights characteristics.