Research On The Change Trend And Influencing Factors Of Gross Margin In China's Industrial Sector

Industry is a pillar of the national economy.As an important indicator of evaluation of income,gross margin reflect the overall earnings of the industrial sector accurately.This paper will analyze the gross margin of the industry sector as the starting point.The integrated use of time series modeling methods,principal component analysis and multiple linear regression approach to conduct a comprehensive analysis of the income level of China's industry sector and influencing factors.Through research,we found that China's industrial sector gross margin gradually have declined since 2003.After the second quarter of 2005,the gross profit margin of the industrial sector was below the historical average of 18.63%.In recent years,the downward trend has become gentle and gradually stabilized at more than 16%.Then we summarized the affecting factors of industrial sector gross margin from the policy environment,economic environment,sales price,cost factors,business models and strategies,other factors.After quantitative analysis,we obtained money and quasi money supply M2,the number of industrial sector units,total current assets,GDP,sales charges,management fees,finance charges,urban residents' disposable income,CPI and other factors to the influence degree of China's industrial sector gross margin.