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The higher levels of chlorate were discovered during routine testing at the company's production facility in Ghent, Belgium, according to an unnamed company spokesperson quoted by the AFP news agency.

Andra Ghent, a professor of finance at the University of Utah, said the changes on their own aren’t likely to have much of an effect.

Ghent, the Utah professor, said real change won’t come from the new rules themselves.

Despite the defendants’ absence, the trial’s significance was underscored by Brigitte Herremans, a senior researcher at the Human Rights Centre of Ghent University.

“There was dialogue and with political plodding, solutions emerged. But now, all too often, that doesn’t work anymore,” said Prof. Hendrik Vos of Ghent University.