Research On The Influence Of Manufacturing Product Quality On Gross Industrial Product

Since 2012,our country's total import and export trade had surpassed of the United States and became the largest trading country in the world.Social productivity,comprehensive national strength and people's income have improved significantly.Individuals,enterprises and governments have begun to pay more and more attention to the quality factor.However,there is a certain degree of "dislocation between supply and demand" in domestic market.The products provided by enterprises cannot meet the needs of consumers,which makes the phenomenon of "Hai Tao" popular throughout the country.Cultivating competitive advantage of product quality is an important way to ensure the sound and rapid development of our economy.Therefore,this paper starts from the supply-side to explore the impact of manufacturing industry product quality on gross industrial product.This paper combs the research of many experts and scholars on the product quality,the relationship between product quality and economic growth,and draws a more consistent conclusion: with the progress of science and technology,quality plays an increasingly prominent role in economic growth.However,most of the studies choose R&D input,as an indicator of scientific and technological progress or as a quality indicator.This paper argues that simply introduce R&D investment into economic model for analysis without considering the effectiveness of R&D investment is open to question.From the enterprise's point of view,product quality(including improved quality and creative quality)is its effective output,so the paper takes the supply-side product quality index as the independent variable for research.The product quality indicators issued by the General Administration of Quality and Technology Supervision in China include the quality competitiveness index and the qualified rate of supervision and spot check.These two indicators can reflect the macroscopical state of the supply-side product quality at present,but the emphasis is different.According to Fornell's method of studying the validity of American Customer Satisfaction Index,this paper borrows his method to compare the effectiveness of the two indexes for economic growth.We found that from statistical data,the qualified rate of supervision and spot check reflect the economic growth better than the quality competitiveness index to a certain extent,so the qualified rate index of supervised and spot check is chosen as the variable of follow-up study.Due to the parameters of the economic model and the stochastic perturbation term will change with various factors such as policy changes,market environment changes,technological progress and so on,the economic variables themselves also have a certain non-linear dynamic adjustment mechanism.Therefore,this paper uses time-varying parameter vector autoregressive(TVP-VAR)model to select the relevant data of gross industrial product,qualified rate of supervision spot checks,total industrial capital and industrial labor input from 1994 to 2016.ADF test is used to determine whether the unit root exists in the variable sequence.Granger causality test is used to determine the change direction of variables.Johansen and Juselius co-integration test is used to determine the co-integration relationship between variables.In addition,BDS non-linear test is carried out on variables,and Markov Chain Monte Carlo(MCMC)simulation is used to obtain effective simulation estimation.Finally,carried out the impulse response analysis to study the correlation between variables.Research results show that: first,the qualified rate of supervision and spot check reflect the role of economic growth better than the quality competitiveness index in theory.Second,labor input and capital accumulation are still the two most important factors in the development of manufacturing economy,while the role of quality factors is gradually increasing.Third,China's manufacturing industry is gradually changing from labor-intensive industry to capital-intensive and technology-intensive industry.In the short run,the role of labor and capital in economic growth is stronger than product quality.However,over time,the role of product quality has a trend to exceed the labor and capital in gross industrial product.After that,our country's manufacturing industry will enter the "Quality era".