More Detail: 1. High-quality environmentally friendly solvent-free technology leather, good gloss, easy to clean and durable; 2. Back frame: ≥18cm bending plate, high-quality high-rebound sponge, seat back durability test, the seat cushion exerts a force of 109kg, the back cushion exerts a force of 45kg, and the cumulative cycle test is 120,000 times, no abnormality, in line with ergonomics; 3. Seat cushion: ≥12cm bending plate, high-quality high-rebound sponge, bearing 57kg through the seat cushion durability test, 36mm height from the seat cushion, free fall test 100,000 times, no abnormality; 4. Electroplating fixed armrests: plus leather armrests, passed the durability test: the vertical armrests are formed in a 10-degree direction, and a force of 41kg is applied to the two armrests at the same time, and the cycle test is 60,000 times without abnormality; 5. Bow frame: strengthen the metal casing bow-shaped electroplating support frame, the tube wall is 2.0, and the supporting force is strong.