The Impact of Overseas Warehouse on Cross-border E-Commerce Exports from the Perspective of System Dynamics

The novel coronavirus pneumonia epidemic is still raging around the world. Therefore, 1 during the period of global pandemic, maintaining the normal circulation of medicine and health 2 fields is the key to fight against the epidemic. This paper-based on relevant data such as the 3 export volume of cross-border e-commerce in Hangzhou, China from 2015 to 2019, the article uses 4 system dynamics modeling to explore the impact of overseas warehouse services on cross-border 5 e-commerce export transactions. Studies have shown that the introduction of overseas warehouses 6 has significantly improved customer satisfaction and improved the quality of cross-border logistics 7 services, which has a positive impact on cross-border e-commerce export transactions. Through 8 sensitivity analysis, it can be seen that under the same conditions, the efficiency of customs 9 clearance has the greatest impact on overseas warehouse services. Therefore, when allocating 10 various investments in overseas warehouses, you can favor the customs clearance process to 11 enhance the competitiveness of the cross-border e-commerce market and provide a feasible 12 experience for healthcare supplies export from cross-border e-commerce. 13


Introduction
With the development of social progress and economic globalization, cross-border 17 e-commerce, as a new type of market segment business behavior, has grown rapidly. 18 In 2019, China's cross-border e-commerce transactions jamounted to 10.8 trillion yuan. industry is divided into markets but also can take advantage of the opportunity to 36 integrate other markets, It has gradually become an important way of import and export 37 supply, but it is also limited by some trade barriers. With the rapid development of cross-border logistics, market competition contin-80 ues to intensify, and the corresponding logistics service quality needs to be improved. 81 Perreault and Russ once proposed the 7R theory, that is, the process of logistics service 82 quality is like the quantitative process of value creation of logistics enterprises, and   In legal terms, an overseas warehouse is not just a warehouse for the storage of distribution, and service level, and analyze the impact of these three inputs on service 143 quality in overseas warehouses.

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The first is order processing, including order processing in a timely manner, accu-145 racy, order satisfaction rate and other factors, order processing in a timely and accurate 146 manner will affect the customer's first impression of the enterprise, and is therefore 147 very important. Next is the logistics and distribution, including the products from 148 domestic warehouses to overseas warehouses, overseas warehouse goods to the hands 149 of consumers, consumer returns and other processes. Consumers want to be able to 150 receive their products as soon as possible, but also to ensure that the product is intact.

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This requires overseas warehouse logistics to be able to do the best in terms of customs  In order to explore the specific impact of overseas warehouse services on cross-border 161 transactions, this paper adopts a system dynamics modeling approach and will conduct 162 an in-depth analysis of this issue.

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Before modeling, the system boundary problem also needs to be clarified first.

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Because the system will receive the joint influence of internal and external factors, so in 165 order to simplify the system, this paper makes the assumption that the external factors 166 do not affect the system, so the external factors are not considered here. In this paper, we 167 mainly study the influence of logistics on the trading scale of cross-border e-commerce, 168 which is mainly divided into three subsystems: order processing capacity, logistics and 169 distribution level, and service quality. The cross-border e-commerce system is a complete system, which is composed of 178 many independent subsystems, and each element is independent of each other, and the 179 hierarchical structure is clear.  variables, etc., with transaction size as the flow position variable.

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The system flow diagram constructed in this paper is shown in Figure 1.  steps in the next chapter before we can reach a final conclusion.   Table 1 below. As shown above, the error range between the real results and the 306 simulation results of transaction size are within 5 percent, which is within the acceptable 307 range. It shows that the model does not differ much from the real data, thus it can prove 308 that the construction of the model in the paper is reasonable and feasible. On this basis, year by year, customer satisfaction has also been greatly improved, and with the gradual 335 improvement of each business, on the right track, and infinitely more perfect, customer 336 satisfaction gradually tends to stabilize. The specific model results are shown in Figure   337 3.

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The system dynamics model can not only predict future trends, but also provide the relevant parameters, which helps the management to make a reasonable plan and 344 corresponding adjustment for the company.

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In the system dynamics model of this paper, five relevant business activities are 346 mainly cited as input variables, namely: staff training, information system, reverse 347 logistics, customs clearance and service. According to the data, the company invests 348 12 percent of its business income in these five areas of service construction in order to 349 obtain better economic efficiency. How to allocate the investment in these five areas 350 is the first issue that the company needs to consider. In order to facilitate the analysis 351 and discussion, this paper allocates 12 percent of the business revenue equally to each After passing the validity test and historical test, it can be found that the model built 374 in this paper has a certain authenticity and reasonableness, so it is also meaningful to use

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(b) In a customer-led "pull" supply chain system, overseas warehouses can grasp 398 customer needs in a timely manner, but the high investment in the initial stage of 399 overseas warehouse construction has also caused many companies to stay away. In order 400 to achieve synergy, it can be achieved through skill sharing, resource sharing, strategic