Beijing also slapped export and investment curbs on 25 U.S. firms, on grounds of national security, but, unlike when it retaliated against the Trump administration's February 4 tariffs, this time avoided punishing any household names.
Later on Tuesday, China said it would investigate U.S. producers of a type of optical fibre for circumventing anti-dumping measures, suspended the import licences of three U.S. exporters, and halted China-bound shipments of U.S.
lumber. Meanwhile, China announced a ban on imports of genetic sequencers from U.S. medical equipment maker Illumina, just minutes after U.S. President Donald Trump's additional 10% tariff on Chinese goods took effect.
