Canadian Manufacturing

Woman in DuPont espionage scheme pleaded guilty to related charge

The scheme involved paying retired DuPont engineers for sensitive company documents and selling them to China

May 7, 2015  by The Associated Press

OAKLAND, Calif.—A woman accused along with her husband and former DuPont engineers of stealing trade secrets and selling them to China has pleaded guilty to a related charge.

Court records show Christina Liew entered the plea May 6 in federal court in Oakland to conspiracy to tamper with evidence.

Authorities say Liew and her husband, Walter Liew, paid retired DuPont engineers thousands of dollars for sensitive company documents about how to make a white pigment known as titanium dioxide. It’s used to whiten products from cars to the middle of Oreo cookies.

The Liews were accused of selling that technology to China.


Walter Liew was sentenced to 15 years in prison last year after a jury convicted him of economic espionage. Two former DuPont engineers have also been convicted of economic espionage.

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