
Electronics & Semiconductors
SeAH CSS supplies high-purity materials for the semiconductor industry, ultra-fine wire rods, and INVAR flat bars for OLED Mask Frame, as well as other specialized materials for the electronics and semiconductor industries.

For Semiconductor Industry
Steel Grades : 316L (EAF, EAF+VAR, VIM+VAR)
Application : High-purity precision components for gas transport in semiconductor manufacturing lines


Hyper cleanness
Steel Grades : 302(EAF or VIM+VAR), 316(EAF or VIM+VAR)
Application : Ultra-fine wires (30㎛ or less) for semiconductors and medical use

Home Appliances & Mobile
Steel Grades : INVAR36
Application : OLED Metal Mask Frame