BEIJING -- China put into effect Tuesday a new export control law that allows it to block shipments to foreign companies for national security reasons, adding to the challenge for U.S. President-elect Joe Biden in dealing with the world's second-largest economy.
Trade war
China's new export law takes effect, putting global businesses on edge
Uncertainty hangs over supply chains that rely on Chinese factories
Chinese President Xi Jinping visits a factory in Guangdong Province. Details of China's new export control law remain murky. © Kyodo
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