Recently, the European Commission adopted "requires member states to ensure that no containing the biocide dimethyl fumarate products delivered to the draft or sell products on the market," the provisions of 2009 after May 1, prohibiting containing fumaric dimethyl products on the market or on the market, already on the market or sold on the market products containing dimethyl fumarate should be recovered; in addition to the provisions should not be used in the product and packaging containing dimethyl fumarate desiccant esters, preservatives outer pouch。