Thickness: 3.5 μm, tensile strength: 300–400 N/mm², elongation ≥ 4%. Double-side bright finish with fine texture, excellent electrical conductivity and balanced mechanical strength. Balancing lightweight structure and structural stability, it is suitable for mass production of high-energy-density cells, widely adopted in long-range new energy passenger vehicles, large industrial & commercial energy storage systems, portable power stations and other fields.