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Former DuPont Worker Pleads Guilty in Economic Espionage Case

Former DuPont Co. employee Tze Chao pleaded guilty to conspiring to steal trade secrets about titanium dioxide technology from the company and provide them to China’s state-owned Pangang Group Co.

Chao, 77, a naturalized U.S. citizen who spent 35 years at DuPont, said he used his former employer’s trade secrets to help Pangang, which was building a 100,000 metric-ton-per-year plant to produce titanium dioxide, a white pigment used in paints, plastics and paper. He entered his plea yesterday in federal court in San Francisco, admitting to one count of conspiracy to commit economic espionage.