Companies without a legal presence in the EU, producing substances or substances in preparations and at the same time importing them into the EU, have to register these substances according to REACH. However, the companies cannot do the registration themselves. Besides the importer, an Only Representative can be put in charge of the registration. The Only Representative takes over all registration obligations and further duties which would otherwise have to be fulfilled by the importer. In case of an Only Representative, the importer has the function of a downstream user without registration obligations.