LCY Technology Corp. manufactures and sells copper foil for the printed circuit board and copper foil substrate industries in Taiwan and internationally. Its product range includes 4oz, 3oz, 2oz, 1oz, 1/2oz, 1/3oz, and 9µm copper foils, along with 7µm, ultra-thin, very low-profile, reverse treatment, and very low-profile RTF foils. The company also provides high-frequency, high-density, and high-speed materials, as well as precision die-casting solutions. Founded in 1997, it is headquartered in Taipei City, Taiwan.