Core Insights - Defu Technology has developed a 3-micron ultra-thin copper foil, breaking the long-standing overseas monopoly and achieving domestic substitution in the market [2][3] - The company has successfully transitioned from traditional electronic circuit copper foil to lithium battery copper foil, resulting in a significant revenue increase [3][5] - Defu Technology's R&D investment has grown by 30.45% year-on-year in 2024, with over 500 patents filed, showcasing its commitment to innovation [4][5] Company Overview - Defu Technology, established in 1985, is one of the oldest domestic electrolytic copper foil manufacturers, focusing on high-performance copper foil production [3] - The company went public on the ChiNext board in August 2023, marking a significant milestone in its growth trajectory [3] Product Development - The ultra-thin copper foil is crucial for enhancing battery energy density, with a 1-micron reduction in thickness leading to approximately a 5% increase in energy density [3][4] - The company has achieved mass production of various specifications, including 3.5, 4, 4.5, and 5 microns, and has developed new copper foil solutions for solid-state batteries [5] Market Position - Defu Technology aims to lead the high-end copper foil market through technological innovation rather than price competition, with a focus on high-frequency communication and AI applications [6][7] - The company has established a strong customer base, including leading global battery manufacturers such as CATL, ATL, LG Chem, and BYD [5] Strategic Expansion - In July 2025, Defu Technology initiated an acquisition of CircuitFoil Luxembourg, increasing its annual electrolytic copper foil production capacity from 175,000 tons to 191,000 tons, solidifying its position as a global leader [8] - The acquisition will enhance the company's international market presence and support the domestic substitution of high-end electronic circuit copper foil [8]
3微米“箔”如蝉翼 德福科技厚积薄发点亮“微毫之光”