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On the average of non-profit

Some extent offset by changes in supply prices and the impact of these factors determine the profitability of the sector or industry, profit margins do not actually mean. Because of these factors exist in the commodity economy or the market at all stages of economic development, but in different forms and stages of the role of differences in size, so the average of non-profit exists in the market trends in various stages of economic development, even in the so-called There is also a free competition three times, in different sectors of the average profit margin of difference between the actual profit and non-averaging factors from two different forces to the opposite trend. The average trend of Bu Zhiyu much difference, so that the allocation of resources remained relatively stable; non-average trend is to widen the gap between the profitability of the industry. Which led to regular flow of capital and restructuring of the two trends may partially offset each other. However, the average of the factors causing the role of non-enhanced, making the industry, companies do not mean the actual profit margins become the norm. Continuity of social production, the profitability of any year are the result of changes over the past profitability. Change is the starting point for future profitability. If the profit margin averaging is an inevitable trend, then it will be the performance in any one year; the same token, the average of non-profit will be shown at all times, therefore, a certain period of statistics that reflect the actual profitability trends. Table 1 and Table 2 reflects the 20th century, the industry profit margin of 70-90 years between the United States in different tables 11970-1985 U.S. durable goods industries and non-durable goods industry, return on assets between units:% Source: 1987)}, Oriental Press, 1990. P. 445 industrial and non-durable goods, durable goods industries are two industries. From 1970 to 1984, the U.S. industry's profit margins these two obvious differences, there is no change in the average trend of Table 2 shows the 23 industries the U.S. profit margin difference between the early 90's. From Table 2, data, tobacco, other chemical, beverage, printing and publishing, industrial chemicals, glass and its products, electrical machinery and other industries is relatively high profit margins,[link widoczny dla zalogowanych], and there is no general decline in 4 years, of which there are different ranges of some industries rise; petroleum refining industry's profit margin is relatively low, 4 years, although the increase by 3.8 percentage points, is still low. Although the individual years of a roughly equal number of industry profit margins. But, in general the industry's profit margins are not average. Other Western countries and China, the industry is also a great difference between the actual profit margin, do not see any of the average trend. Ben 27 labor theory of value does the table 21991-1994 U.S. industry output value of 23 Table 3 the world's 10 largest companies profit margin difference between the sales profit rate units:% different units:% said sigh: the table all at the margins Public sector added value minus the value of responsibility in order to obtain lower and lower. Due to the increased value of the Depreciation of fixed assets is included in 1. Not been deducted. Thus calculation of profit margins high. But whether the fixed assets of the industry whether the rate of discount equal to 1, can not exactly offset the difference between the profit margin is calculated. Therefore, data in the table milk may indicate the actual profit margin is not the industry responsible for an average of Source: Under the The average of non-profit sectors, must be reflected by corporate profit margins. As the number of firms in different industries and operating conditions vary, the profitability of the enterprises do not necessarily lead to the industry average profit margin uneven. Table 3 reflects the world's largest profit margin lO difference. Responsible for material collected Tam: changes in the top ten of the company, so Table 3 does not indicate the specific name of the company. These companies mainly in the mechanical, electrical, oil and other industries. The top ten companies on the profit margin is not average. 500 difference between the profitability of large companies as well. Due to data limitations, is still difficult to use statistical data to prove that a market economy since the formation of the various periods since the average of the non-profit. But at least shows that the above information, in the modern market economy, industries and enterprises of non-existence between the average profit margin trend analysis based on the theory and the above referenced information, you can argue that the traditional political economy of knowledge on the profit margin trends is not comprehensive. Therefore, the average profit margin can not be based solely on the trend, to determine the price value of production into ● (of: the CPC Guangdong Provincial Committee Party School professor) (Editor: Yun Li)