Abstract
The trend of harmonization on chemical substances is explained with the action of harmonization in European Union(EU). At first, harmonization on characterization of waste, and horizontal project, then WEEE directive and RoHS directive, REACH and PRTR, furthermore J-Moss and Chinese RoHS are explained. They are classified to "entrance regulation/control" and "exit regulation/control". At entrance side, good results are expected by top-down force. On the other side, effect of harmonization among them may be limited at exit side. And then, harmonization will be divided into three types. The first is the harmonization from chaos, the second is the harmonization of idea and mind, and the third is the harmonization focused on market. The third type is expected in the future.
