Unlike the trade in final goods described in traditional trade models,trade in intermediate goods is a product of the deepening international division of labour,the optimal allocation of production factors and the internationalisation of production,and is also an important link in the global value chain.A large number of intermediate goods are deployed in neighbouring regions or other countries for specialised production,and the high cost of trade is becoming an important obstacle to cross-border trade.In the "post tariff era",traditional trade barriers have been reduced to the optimal level.Non-facilitation of trade,such as complex and cumbersome customs clearance procedures,opaque management policies and backward financial services and information technology level,has hindered trade exchanges and caused widespread concern in the academic community.Especially in the context of economic counter-globalisation and trade frictions between the US and China,improving customs clearance efficiency,reducing trade costs and promoting trade facilitation have become key contributors to promoting trade in intermediate goods as well as enhancing the division of labour in the global value chain.In this context,this paper measures a country’s global value chain division of labour status by measuring the length of its global production segmentation(number of production stages)and the number of domestic and international production stages under its deconstruction,using 42 countries in the world input-output table as the study target and selecting input-output data from 2006-2014.This paper constructs a more comprehensive system of trade facilitation indicators,and on the basis of the entropy value method to obtain the level of trade facilitation in each country,econometrically analyses the effect of trade facilitation on the length of production segmentation in a country and the underlying mechanism.The findings show that there is a significant dampening effect of the level of trade facilitation on the number of domestic production stages in each country,a significant boost to the number of international production stages,and also a boost to the number of global production stages,a result that remains robust to the inclusion of instrumental and substitution explanatory variables.Heterogeneity analysis in terms of distinguishing between country type,industry type,and trade facilitation sub-indicators reveals that the level of trade facilitation affects the number of domestic,international and global production stages in a country to varying degrees.Further research through moderating and mediating effects reveals that the mechanism of influence is mainly through lowering the prices of intermediate inputs and increasing total factor productivity. |