Abstract: Provided are a resin composition for surface treatment and a surface-treated steel sheet coated therewith. The resin composition for surface treatment includes a dispersing element having excellent thermal conductivity and heat dissipation, thereby maintaining physical properties of the conventional anti-fingerprint steel sheet, for example, high whiteness, fingerprint resistance, workability, electric conductivity and alkali resistance, and providing heat dissipation. In addition, the surface-treated steel sheet coated with the resin composition for surface treatment of the present invention has physical properties such as high heat dissipation, electric conductivity and whiteness, and thus may be replaced with a bottom chassis of a backlight unit, particularly, an edge-type backlight unit.

Abstract: Provided are a resin composition for surface treatment and a surface-treated steel sheet coated therewith. The resin composition for surface treatment includes a dispersing element having excellent thermal conductivity and heat dissipation, thereby maintaining physical properties of the conventional anti-fingerprint steel sheet, for example, high whiteness, fingerprint resistance, workability, electric conductivity and alkali resistance, and providing heat dissipation. In addition, the surface-treated steel sheet coated with the resin composition for surface treatment of the present invention has physical properties such as high heat dissipation, electric conductivity and whiteness, and thus may be replaced with a bottom chassis of a backlight unit, particularly, an edge-type backlight unit.

Abstract: Disclosed herein is a weldable pre-sealed steel sheet with improved corrosion resistance and weldability. The pre-sealed steel sheet comprises (a) a metal base, (b) a chromium-free pre-treatment coating layer formed on at least one surface of the metal base, and (c) a pre-sealed resin coating layer formed on at least one surface Chromium-free pretreatment of the chromium-free pretreatment coating layer. Since the weldable pre-sealed steel sheet does not contains heavy metals (e.g., chromium) harmful to humans, it is environmentally friendly. In addition, the weldable pre-sealed steel sheet exhibits superior corrosion resistance, chemical resistance, processability, electrodeposition paintability and adhesiveness after processing, as well as improved weldability.