The Circular Economy needs the same rules. Therefore a synchronisation of legislation is necessary. The EU commission has already started a participation process. The problem to be solved is based in the huge complexity: more than 3,300 materials or substances are known. Out of these about 2,000 are registered in the European data base REACH. Besides these materials are offered as compounds, which are multi-material products, such as plastic-metal compounds we find in electronic devices, windows, furniture or else. But the goal of circular economy is a better...