Sumitomo Chemical has two aluminium refining processes:the three-layer electrolytic process and the segregation process. In particular, the world's highest level of refining technology, three-layer electrolytic refining technology enables us to achieve the mass production of products with purity of 5N or higher.
Ultra High purity aluminium
Aluminium Dept., Inorganic Materials Division
27-1, Shinkawa 2-chome, Chuo-ku, Tokyo 104-8260, Japan