Surface Treatment

Our surface treatment technologies are able to achieve both extremely low roughness of the treated rolled copper foil surfaces and good adhesion to polyimide resin. They are therefore highly regarded especially in applications involving high-frequency properties or fine patterning. Moreover, we provide treated rolled copper foil with a variety of corrosion prevention treatments meeting customer needs for resistance to heat, chemicals, and soldering.


  • Fine surface treatment for very low surface roughness
  • Strong adhesion performance
  • Very low roughness is achieved also on the matte side
  • Outstanding high-frequency characteristics, visibility, and fine patterning