We extend the Melitz model to include pure exporters and study how they influence economic performance. We find that the presence of pure exporters lowers the productivity premium of exporters. Moreover, if there is a large portion of pure exporters, then international trade lowers the average productivity, but not welfare. Moreover, we explore how trade liberalization in form of lower entry cost into foreign markets and lower variable export cost influences the distribution of firms between pure exporters, ordinary exporters and non-exporters.

中文翻译：

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与纯出口商贸易的影响

我们将 Melitz 模型扩展到包括纯出口商，并研究它们如何影响经济表现。我们发现纯出口商的存在降低了出口商的生产力溢价。此外，如果有很大一部分纯出口商，那么国际贸易会降低平均生产率，但不会降低福利。此外，我们探讨了以降低进入国外市场的成本和降低可变出口成本的形式实现的贸易自由化如何影响企业在纯出口商、普通出口商和非出口商之间的分布。