The Influence of 3D Printing on Global Container Multimodal Transport System

Table 1

Variable symbol of transnational supply chain.

Symbol	Meaning of variables
OfME	An oil field in the Middle East
ReBG	A refinery around the Beibu Gulf
PoPR	A port in the Pearl River Delta
DcPR	A distribution centre in the Pearl River Delta
PoPG	A port in the Persian Gulf
PfPR	A plastic processing factory in the Pearl River Delta
PoWU	A port in the West US
DcUS	A distribution centre in the US
PoBG	A port in the Beibu Gulf
MfPR	A sneaker manufacturing factory in the Pearl River Delta
DcME	A distribution centre in the Middle East