Standard configuration instructions:

　　Back sponge: It is formed by cold foaming high resilience shaping PU sponge integrated foam molding, density up to 55Kg / m3.

　　Block: Made of cold-foamed high-resilient PU foam in one piece, with a density of 60kg / m3. Long-term use is not easy to deform; the seat cotton has a built-in 1.5mm thick steel frame + serpentine spring, and a black non-woven fabric is used as a partition. The seat bag is not easy to deform and durable;

　　Seat, back outer panel: high-quality multi-layer rotary cut birch veneer with formaldehyde-free environmentally friendly glue hot-pressed, the thickness is 16mm;

　　Fabric: It is made of high-quality special fabric, covered with cotton, which is wear-resistant, breathable, and comfortable to sit on.

　　Footstep: high-quality 2.0 steel plate is formed by die stamping and welding, and the surface is processed by multiple processes;

　　Handrail frame: Use high-quality multi-layer spin-cut birch veneer with formaldehyde-free environmentally friendly adhesive hot-press molding, paint finish;

　　Return mechanism: adopts button spring + damping gas rod slow rebound mechanism.

　　Earth explosion screw: stainless steel hexagon socket head screw and color zinc-plated expansion nut