China, which used to be the world’s salvage king, is shutting its door to all waste imports starting the first day of the new year. The recent announcement triggered the same kind of anxiety among waste-exporting countries as in 2018, when China enacted its “Operation National Sword” policy, which banned the import of 24 types of solid waste, including plastic waste.The 2018 policy switch caused the world’s major waste-exporting countries – Europe, Britain, the US and Australia – to scramble…