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"Core technologies cannot be bought," Guan said.

"China's push to cultivate innovation-driven growth will inject new life into the country's real economy and fuel the integration of cutting-edge technologies with manufacturing," Qu said.

"China strongly condemns and firmly opposes the US tariff proposals and is ready to take reciprocal measures on US products," the Ministry of Commerce said in Beijing shortly after the US announcement.

"China started operating its first maglev railway more than a decade ago but has since concentrated on conventional high-speed rail because it was hindered by many critical technologies at that time," said Sun Zhang, a railway expert and engineering professor at Shanghai Tongji University.

"Companies flocked to China in large numbers because the country was the first to control the pandemic and resume domestic circulation. As China's dual circulation economic development pattern continues to strengthen, there will be more opportunities for European businesses," He said.