11. Importers shall, further to a reasoned request from a competent national authority, provide it with all the information and documentation, in electronic format and, on request, in paper format, necessary to demonstrate the compliance with this Regulation of a detergent or surfactant, in a language which can be easily understood by that authority. Importers shall cooperate with that authority, at its request, on any action taken to eliminate the risks posed by a detergent or surfactant which they have placed on the market.