China challenges US to provide 'evidence' in trade secrets case

China challenged the United States Friday to show evidence to support charges that Beijing backed a scheme by Chinese and Taiwanese companies to steal trade secrets from a US-based semiconductor firm.

US Attorney General Jeff Sessions accused the companies on Thursday of stealing an estimated USD 8.75 billion worth of know-how from semiconductor giant Micron.

The Justice Department unveiled criminal charges against Chinese state-owned Fujian Jinhua Integrated Circuit Co, and United Microelectronics Corporation (UMC) of Taiwan, along with three UMC officials.

It said they conspired to steal US-based Micron's advanced designs to turn Fujian Jinhua into a major player in the global computer chip market.

"If the US side is really concerned, they should provide concrete examples that can withstand the test of evidence and facts," Chinese foreign ministry spokesman Lu Kang told a regular press briefing.

The charges were the latest in a series of cases targeting what Washington calls an ongoing Beijing programme to steal valuable US industrial and commercial secrets in order to advance the Chinese economy.

"Taken together, these cases and many others like them paint a grim picture of a country bent on stealing its way up the ladder of economic development and doing so at American expense," Sessions said.

"This behaviour is illegal. It is wrong. It is a threat to our national security. And it must stop."