1. Fabric: Triple-resistant (waterproof, oil-proof, stain-proof) high-grade eco-friendly fabric. Waterproof (G, according to G/T 4745-2012) level 4-5; Oil-proof (GB/T 19977-2014) level 5; Stain-proof (FZ/T 01118-2012) level 4-5. Wear resistance (GB/T 21196.2-2007) > 70,000 revolutions. Flame retardancy (GB/T 5455-2014) Class B1, color fastness > B1 level, color stability 4 level, good breathability.
2. Backrest and sofa armrest base material: Foam-embedded steel frame, high-density high-elastic fabric for the waist. Can withstand a pressure of 150KG.
3. The used shaping cotton: American fire-resistant, high-density, high elasticity shaping cotton, density 60, hardness 45, waist sponge density 45, hardness 40, formaldehyde emission ≤ 0.05mg/m'.h, TVOC emission ≤ 0.50mg/m'.h; Formaldehyde emission ≤ 0.05mg/m'.h, TVOC emission < 0.50mg/m'.h.
4. Use domestic high-quality aluminum alloy foot frames, durable and rust-proof.