1、Frame: Made of Q235 galvanized rectangular steel tube, 40×40×1.5 mm.
2、Climbing wall padding: 15 mm plywood (Inspection standard: GB/T 5849-2006 (Plywood); formaldehyde emission (9–11 L), internal density deviation, moisture content, static bending strength, modulus of elasticity, and internal bond strength meet the E0 grade requirements of GB/T 5849-2006); high-density EPE pearl cotton, 10 mm thickness (Test standard: GB 6675.4-2014); Plato PVC-coated mesh fabric, 0.52 mm thickness, warp/weft density 1300×1300D, compliant with EU standard EN 71-2:2020 Safety of Toys — Part 2: Flammability, Clauses 4.1 and 4.4.