On July 19, Xiaomi launched the groundbreaking MIX Fold 4, marking the first smartphone to adopt a full-carbon architecture with T800H high-strength carbon fiber. This innovation aims to achieve exceptional durability and ultra-thin design in foldable devices.
MIX Fold 4: Reinventing Foldable Durability
The use of T800H carbon fiber significantly enhances structural strength, enabling the phone to withstand daily stresses and impacts while extending its lifespan-a critical advancement for foldable screens, which endure repeated mechanical motion during folding. The material's lightweight properties also allow Xiaomi to reduce thickness without compromising robustness, setting a new benchmark for sleek, high-performance foldables.
SU7 Ultra: A Carbon Fiber Automotive Marvel
Xiaomi simultaneously unveiled the SU7 Ultra, an extreme-performance prototype featuring a 100% carbon fiber body. Key highlights include:
Power: A triple-motor all-wheel-drive system (dual V8s + V6 configuration) delivering 1,548 horsepower, accelerating from 0-100 km/h in 1.97 seconds with a top speed of 350 km/h.
Battery & Braking: Equipped with CATL's track-optimized high-efficiency battery and specialized braking system, achieving a 100-0 km/h stopping distance of 25 meters.
Design: Aggressive aerodynamics with a lowered, widened stance, Lightning Yellow paint with racing decals, a massive rear diffuser, and a fixed oversized spoiler generating 2,145 kg of downforce.
Weight Reduction: Carbon fiber replaces 24 components (15 m² total), slashing the vehicle's weight to 1,900 kg-lighter than many gasoline-powered production cars in its class.

Industry Impact
The MIX Fold 4 and SU7 Ultra showcase Xiaomi's ambition to push material innovation boundaries. By integrating aerospace-grade carbon fiber into consumer electronics and automotive design, Xiaomi not only elevates product performance but also sets new standards for lightweight engineering across industries. These launches signal a bold step toward redefining premium, sustainable tech in the era of advanced composites.





