Pesticide regulatory heterogeneity, foreign sourcing, and global agricultural value chains
利用瑞士企业进口数据和各国农药残留限量标准，研究发现监管异质性会减少企业进口，但大企业和参与全球价值链的企业受影响较小。
Abstract Regulations on the production and consumption of goods are very heterogeneous across countries. Whereas the effects of regulations on exports are well known, the responses of importers to heterogeneous and frequently changing country‐specific regulations are not well understood. We combine Swiss firm‐level import customs transaction data with country‐product‐year‐specific maximum residue limits to investigate the effect of pesticide regulatory heterogeneity on firm‐level imports and assess the moderating role of firm size and global value chain participation. Relying on a global sourcing model, we find that regulatory heterogeneity reduces imports but less so in larger and diversified firms. Participating in global value chains also improves firms' flexibility toward heterogeneous regulation. Business diversification—although reducing the gains from trade and scale—could help firms cope with heterogeneous international regulations.