As my country’s most representative location-oriented industrial policy，The essence of the establishment of bet365 mobile zones is that the government attracts enterprises to gather in designated geographical spaces through tax incentives or subsidies，Generate external economy，Thus creating more jobs and economic output。On the one hand，With the evolution of industrial structure and the transformation and upgrading of manufacturing industry, the demand for producer services is rising，The impact of producer services on the bet365 mobile of bet365 mobile zones is bound to be increasingly deepened。On the other hand，Rapid bet365 mobile and improvement of quality and efficiency of producer service industry，It is my country’s participation in the division of labor in the international value chain、Promote the transformation and upgrading of industrial structure、An important driving force to promote the optimal layout of regional space。As the main spatial carrier for the agglomeration of my country’s producer services，The construction of producer services in bet365 mobile zones is of great significance to the high-quality bet365 mobile of my country’s producer services。

　　The need for high-quality bet365 mobile in bet365 mobile zones

Since the establishment of the first bet365 mobile zone in 1984，As of 2018，my country has established a total of 552 national-level bet365 mobile zones and 1,991 provincial-level bet365 mobile zones。After more than thirty years of bet365 mobile，my country’s bet365 mobile zones are attracting foreign investment、Promote the bet365 mobile of modern manufacturing、Played a positive radiating and leading role in improving the investment environment。Meanwhile，In order to promote the integrated bet365 mobile of manufacturing and producer services and promote the upgrading of industrial structure，While the bet365 mobile zone focuses on developing modern manufacturing，Accelerate the bet365 mobile of producer services。March 2005，The "Several Opinions on Promoting the Further Improvement of bet365 mobile Level of National Economic and Technological bet365 mobile Zones" issued by the State Council (Guobanfa [2005] No. 15) included "becoming a gathering area for the modern service industry" into the national bet365 mobile zones bet365 mobile goals，Encourage multinational companies to set up R&D centers in national economic and technological bet365 mobile zones、Financial Center、Technical Service Center、Training Center、Procurement Center、Logistics Center、Operation center and other productive service projects。The documents on the innovative bet365 mobile of national bet365 mobile zones issued by the State Council in 2014 and 2017 both highlighted the importance of producer services to the high-quality bet365 mobile of bet365 mobile zones。With the evolution of the industrial structure of "retreating from the second to the third" and the transformation and upgrading of the manufacturing industry, the demand for producer services is rising，The impact of the producer service industry on the high-quality bet365 mobile of bet365 mobile zones is bound to be increasingly deepened。

Although the level of my country’s producer services industry lags behind that of developed countries，But its status in economic bet365 mobile continues to improve，In 2017, the added value of the producer services industry accounted for 57% of the added value of the service industry and GDP respectively.5% and 29.8%。The state has issued a series of policies and guidance，Promote the bet365 mobile of producer services，Promote economic quality, efficiency, transformation and upgrading。"Made in China 2025" bet365 mobile strategy，Clearly proposes to place the strategic key point of industrial bet365 mobile on the producer service industry，By creating and optimizing the productive service industry functional area，Realize the simultaneous improvement of service-oriented manufacturing and producer services。Therefore，The rapid bet365 mobile of producer services，It is of great significance to achieve high-quality economic bet365 mobile in bet365 mobile zones。

　　Strengthen the agglomeration effect

Under the theoretical framework of new economic geography and “new” new economic geography，The establishment of bet365 mobile zones will break the original urban industrial spatial structure，The system will re-form a new stable and balanced spatial structure under the joint action of agglomeration effect and selection effect。bet365 mobile zones have led to the spatial agglomeration of a large number of enterprises，Form an industrial cluster with high market potential，The new economic geography model confirms that regions with high market potential have efficiency advantages，And the source of this advantage is generally attributed to the agglomeration economic effect。The agglomeration of similar industries creates Marshallian externalities，Sharing through intermediate inputs、The labor market reservoir and knowledge spillover mechanism bring about efficiency improvements，The Jacobsian externalities generated by diversified industries will also promote innovation through knowledge spillovers，Thus improving efficiency。Relevant empirical research shows，The establishment of my country’s bet365 mobile zones has effectively promoted the improvement of the efficiency of the producer service industry。In the process of transformation and upgrading of industrial structure in various regions，We should adhere to the agglomeration bet365 mobile model，Guide the concentration of producer service industries in bet365 mobile zones and other location-oriented policy areas。

The agglomeration effect is the source of the efficiency advantage of the producer service industry in bet365 mobile zones，Its strength is positively related to the scale of local manufacturing。For producer services，Manufacturing companies are “demanders”，The scale of the manufacturing industry determines the market potential of the producer services industry，Therefore, the strength of the agglomeration effect of the producer service industry in the bet365 mobile zone depends on the scale of the local manufacturing industry and the intensity of industrial correlation。When the correlation between the producer service industry and the leading manufacturing industry in the bet365 mobile zone is high，The obtained agglomeration effect is stronger。When the local government formulates the bet365 mobile plan for the producer service industry in the bet365 mobile zone，The manufacturing bet365 mobile foundation of the bet365 mobile zone and its surroundings should be fully considered，Prioritize the bet365 mobile of producer services that are more closely related to the leading manufacturing industries in bet365 mobile zones，End the blind pursuit of high-tech service industry，Integrate the bet365 mobile of producer services and manufacturing，Jointly promote the efficiency improvement of bet365 mobile zones。

　　Make full use of the heterogeneous selection effect

The industrial agglomeration in bet365 mobile zones is led by the government、Industrial agglomeration formed by attracting enterprises through a series of preferential policies or subsidies。In order to promote the bet365 mobile of producer services in the bet365 mobile zone，The central government has introduced tax incentives、Financial subsidies、Credit Facility、Land transfer discount、A series of preferential policies including convenient administrative approval。For example，In terms of land supply，National policy requires increasing the proportion of land used for producer services，And allow the use of existing industrial real estate to develop producer services，Continue to use the land according to the original purpose and land rights type within 5 years，Relevant land use procedures need to be completed after the 5-year period expires or involves transfer，Can be used for new purposes、New rights type、Market price，Processed by agreement。In terms of fiscal and tax policies，Entrepreneurship for small and medium-sized enterprises in national bet365 mobile zones、Incubator that provides technical services through independent innovation，And for service outsourcing、Public infrastructure projects where IoT companies provide technical services can apply for central government interest discounts and various tax exemption policies。In addition to national policy support，In order to attract producer service industries to settle in each bet365 mobile zone，We will also provide targeted preferential policies。For example，To the headquarters of multinational companies、Regional Headquarters，And R&D Center、Marketing Center、Settlement Center、Producer service enterprises such as logistics centers，Within five years from the date of registration，Beijing Economic and Technological bet365 mobile Zone provides financial support of 40% of the income tax paid by enterprises。

Large market area in a general sense、Different central areas，bet365 mobile zones are agglomeration areas formed under the guidance of policies，The preferential policies will produce different spatial selection effects for heterogeneous enterprises。For producer services in bet365 mobile zones，The mechanism of its selection effect includes the "competition effect" of the market (the exit of low-efficiency enterprises under the influence of survival of the fittest) and the "location effect" of heterogeneous enterprises (the impact of the entry threshold on the entry proportion of low-efficiency enterprises)。On the one hand，The expansion of the producer services market brought about by the agglomeration of manufacturing industries in bet365 mobile zones，Will intensify market competition，The combined effect of the tight supply of commercial land in bet365 mobile zones and the rising demand for producer services due to the bet365 mobile of manufacturing has raised the price of commercial land，And then promote the increase in the proportion of high-efficiency enterprises in the bet365 mobile zone under the market mechanism of survival of the fittest。On the other hand，The existence of “policy rent” in bet365 mobile zones will lower the entry threshold for enterprises，Increase the entry probability of low-efficiency producer service enterprises，Suppressing the improvement of the efficiency of producer services in bet365 mobile zones。Both of them determine the impact of selection effect on the efficiency level of producer service industry in bet365 mobile zones。

The existence of agglomeration effects allows bet365 mobile zones to operate without policy incentives，Attract enterprises to automatically inflow through spontaneous market forces，Therefore, each bet365 mobile zone should abandon the bet365 mobile model of blindly adopting tax incentives and other policies to attract enterprises to settle in ("race to the bottom" competition)，Give full play to the decisive role of market-oriented mechanisms such as land transfer through bidding, auction, and listing in the rational allocation of resources，Moderate preferential policies for camera selection，Form a "joint force" with the natural endowment and industrial base of the bet365 mobile zone，Promote the quality and efficiency improvement of the producer service industry。

　(This article is a phased result of the National Natural Science Foundation of China Youth Project "The Impact of Key Industrial Policies in bet365 mobile Zones on Resource Allocation Efficiency: Micro-Mechanisms and Policy Optimization" (72003190))

(Author’s unit: School of Applied Economics, Renmin University of China)