Write the following list of characters into a correctly formed sentence: Theadministrationofwhichproductsarecoveredbyaprolongedcomplainttime-limitcanbeleftwiththepartiesonthemarket.Generally,theconsumerwillhavetoprovidedocumentationastowhenaproducthasbeenpurchased.
The administration of which products are covered by a prolonged complaint time-limit can be left with the parties on the market. Generally, the consumer will have to provide documentation as to when a product has been purchased.