1.Upholstery options include PU or genuine leather, with standard use of semi-genuine leather; 2. Backrest and armrests are made of double-layer bent plywood (12mm + 6mm), formed using integrated 3D compression molding; fumigated and pest-resistant treatment applied; 3. High-density foam certified by SGS; 4. Base equipped with matte black airplane-style front-mounted mechanism; 5. Ø50mm gas lift with 65mm stroke; 6. One-piece die-cast aluminum 5-star base, available in natural aluminum finish; 7. Ø60mm premium nylon silent casters with plug-in design for quick installation. Craftsmanship: 1.Bent plywood formed by integrated mold pressing; 2.Precision finishing using 5-axis CNC machining. 3. Painted version uses engineered wood veneer with PU lacquer spray, featuring natural wood matte finish.