First the tainted milk, now toxic chairs? Recliners made by the Dongguan-based company Linkwise are causing cases of eczema, stinging allergic rashes and infections among French customers who bought them. The problems were traced to the use of the chemical, dimethyl fumarate, which is used to prevent mould and fungus on the chairs. The French distributor Conforama has since severed its business ties with Linkwise and told its suppliers to stop all use of the chemical. Out of the 38,000 Linkwise chairs it sold, it says customers have returned about 800 so far. A rash of cases has also cropped...