1. Fabric: Three-proof (waterproof, oil-proof, and stain-proof) high-grade eco-friendly fabric.Waterproof (GB/T 4745-2012) grade 4-5; oil-proof (GB/T 19977-2014) grade 5; stain-proof (FZ/T 01118-2012) grade 4-5. Abrasion resistance (GB/T 21196.2-2007) > 70,000 revolutions. Flammability (GB/T 5455-2014) color fastness > B1 grade, color fastness 4 grade, good air permeability.
2. Backrest and sofa armrest base material: Steel frame foam integrated cotton, high-density sponge at the waist. Can withstand a pressure of up to 150KG.
3. The molded cotton used: American fire-resistant, high-density, high-elasticity molded cotton, density 60, hardness 45, waist sponge density 45, hardness 40, formaldehyde release ≤ 0.05mg/m².h, TVOC release ≤ 0.50mg/m².h.
4. Made of high-quality domestic steel, wall thickness ≥ 1.2MM, surface powder-coated, no peeling, cracking, or wrinkles, strong adhesion, excellent salt spray resistance.