id	keyword
fbem-18671	trade pilot
fbem-18671	trade zones
fbem-18671	free
fbem-18671	pilot zones
fbem-18671	carbon
fbem-18671	free trade
fbem-18671	carbon emissions
fbem-18671	level
fbem-18671	impact
fbem-18671	establishment
fbem-18671	policy
fbem-18671	cities
fbem-18671	china
fbem-18671	results
fbem-18671	model
fbem-18671	development
fbem-18671	group