Under new proposed changes carbon emissions permits would be sold to industry and heavier polluters would have to pay more. And to make it fair to European companies exporters in other countries like China would have to buy these carbon permits to be able to export to Europe. There is similiar discussion about this in the USA which expects caps on greenhouse gas emissions in a few years. These changes wouldn't go into effect till 2013 at the earliest and industry will be trying to create a level playing field by then. Countries like China and India because they are developing have been exempt from the greenhouse caps under the Kyoto Protocol which expire 2012. Under the Kyoto Protocol which Europe signed and the USA did not sign, European companies are giving carbon permits free to emit a certain amount of greenhouse gas every year, the heavier polluters have to buy the permits from the ones that pollute less creating an incentive for companies to reduce emisssions.