Whose Value Is in an Export?

An export can carry more than one country's work inside it. When a finished lamp crosses a border, its recorded value may include materials, components and services supplied elsewhere. The country shipping it has performed an important role, but the export total alone cannot reveal how much value that country created. Understanding the difference requires following production backwards, beyond the last factory and into the network that made its work possible.

一件出口商品可以承载不止一个国家的劳动。当一盏成品台灯跨越国境时，其记录价值可能包含其他地方提供的材料、零部件和服务。发货国发挥了重要作用，但仅凭出口总额，无法看出这个国家创造了多少价值。要理解两者的区别，就需要逆向追溯生产过程，越过最后一家工厂，进入使这家工厂得以开展工作的网络。

This network is a global value chain: production is divided into activities carried out across countries. In its June 2024 explanation of globalization, the IMF describes how separating production stages improved efficiency and allowed developing economies to participate without first building entire industries. Better transport and communication helped businesses coordinate these arrangements. A producer could specialize in a particular activity while relying on other firms for the remaining tasks. International trade consequently connects stages of production as well as buyers and finished products.

这个网络就是全球价值链：生产被划分为在不同国家开展的各项活动。IMF在2024年6月关于全球化的说明中指出，生产阶段的拆分提高了效率，也让发展中经济体无需先建立完整产业就能参与其中。运输和通信条件的改善，帮助企业协调这些安排。一家生产商可以专注于某项活动，同时依靠其他企业完成其余任务。因此，国际贸易连接的不仅是买家和成品，也包括各个生产阶段。

Consider a deliberately simplified, hypothetical lamp. All the countries, prices and transactions below are invented for explanation. Country A produces a component worth $30, using only its own resources, and exports it to Country B. A factory in B turns that component into a lighting unit and sells it to Country C for $70. Workers in C assemble the lamp, which is then exported to a final buyer in Country D for $100. Assume there are no other purchased inputs, transport charges, taxes or retail margins.

考虑一盏经过刻意简化的假设台灯。以下所有国家、价格和交易都是为解释而虚构的。A国完全使用本国资源，生产出价值30美元的零部件，并将其出口到B国。B国的一家工厂把这个零部件加工成照明组件，以70美元卖给C国。C国工人组装出台灯，随后以100美元出口给D国的最终买家。假设不存在其他购入投入品、运输费、税款或零售加价。

The border records show exports of $30 from A, $70 from B and $100 from C. Adding these transactions gives $200. Yet only one final lamp, worth $100, has reached the buyer. Nothing has gone wrong with the border records: each reports the full value of a shipment. The apparent puzzle arises because the same earlier contributions travel inside later shipments. A's original $30 is included in B's $70 export and again in C's $100 export. Gross trade records transactions, so adding them does not measure newly created value.

边境记录显示，A国出口30美元，B国出口70美元，C国出口100美元。把这些交易相加，结果是200美元。然而，到达买家手中的只有一盏价值100美元的最终台灯。边境记录并没有出错：每条记录都报告了一批货物的全部价值。这个看似矛盾的结果，源于早期投入所贡献的价值包含在后续货物之中，继续流转。A国最初的30美元包含在B国70美元的出口中，也再次包含在C国100美元的出口中。贸易总额记录的是交易，因此把它们相加并不能衡量新创造的价值。

Value added asks a different question: how much additional value does each stage contribute after subtracting the purchased intermediate inputs used in production? In this example, A contributes $30. B adds $40, calculated as $70 minus $30. C adds $30, calculated as $100 minus $70. Together, these contributions equal the lamp's $100 final value. C therefore records a $100 export containing $30 of domestic value added and $70 of foreign value added. Domestic here refers to where production occurs, rather than the nationality of the company's owners.

增加值回答的是另一个问题：扣除生产中使用的购入中间投入品后，每个阶段额外贡献了多少价值？在这个例子中，A国贡献30美元。B国增加40美元，即70美元减去30美元。C国增加30美元，即100美元减去70美元。这些贡献合计等于台灯100美元的最终价值。因此，C国记录了一笔100美元的出口，其中包含30美元的本国增加值和70美元的外国增加值。这里的“本国”指生产发生的地点，而不是公司所有者的国籍。

Nor is C's $30 simply the factory's profit. Value added supports several kinds of income, including workers' pay and returns to capital. Real production networks are also much less tidy than this example. A component supplier may import materials, while an assembler buys local services whose providers use imported equipment or inputs. Economists therefore need information about relationships among industries and countries to trace contributions. Reading the final export invoice, or subtracting one conspicuous imported component, cannot usually reconstruct the whole chain.

C国的30美元也不只是工厂利润。增加值支撑着多种收入，包括工人工资和资本回报。真实的生产网络也远没有这个例子那么整齐。零部件供应商可能进口材料，而组装商购买的本地服务，其提供者也可能使用进口设备或投入品。因此，经济学家需要有关产业之间以及国家之间关系的信息，才能追溯各方贡献。阅读最终出口发票，或者减去某一个显眼的进口零部件，通常无法还原整条价值链。

This distinction also changes how we assess industrial progress. In its March 2022 discussion of Turkey, the World Bank linked deeper participation in global value chains with opportunities to improve productivity and increase value-added exports. It highlighted skills, research, infrastructure and stable regulation. Applied to our hypothetical lamp, an assembler might develop testing expertise or start designing lighting units. Those changes could expand its contribution, but a larger export bill by itself would not prove that this had happened. Higher imported-input prices could also increase that bill.

这种区别也会改变我们评估产业进步的方式。世界银行在2022年3月有关土耳其的讨论中，将更深入地参与全球价值链，与提高生产率和增加增加值出口的机会联系起来。它强调了技能、研究、基础设施和稳定监管的重要性。应用到我们的假设台灯上，一家组装商或许会发展检测专长，或者开始设计照明组件。这些变化可能扩大它的贡献，但仅凭更高的出口金额，无法证明这种变化已经发生。进口投入品价格上涨，也可能推高出口金额。

The useful comparison is therefore between measures answering different questions. Gross exports tell us about the value crossing a border; domestic value added identifies the contribution produced within an economy. Neither number alone tells us how income is distributed among workers, firms and regions, or how exposed a factory is to disruption abroad. For the lamp, the final exporter is one contributor in a shared production process. Its customs record captures the shipment; tracing value reveals the work behind it.

因此，有用的比较，是比较回答不同问题的指标。出口总额告诉我们跨境货物的价值；本国增加值则识别一个经济体内部生产所作的贡献。任何一个数字都无法单独说明收入如何在工人、企业和地区之间分配，也无法说明一家工厂在多大程度上受到国外生产中断的影响。对于这盏台灯，最终出口国是共同生产过程中的一个贡献者。它的海关记录捕捉了这批货物；追溯价值则揭示了货物背后的劳动。