Product configuration: plastic frame: black; fabric: high quality imported net cloth; armrest: TPU+ nylon, roasted black lacquer inner tube; chassis: independent research and development of roast black lacquer aluminum alloy wire control; barometer: roast black lacquer, Korean KGS brand, three grade 100mm stroke; chair foot: black plastic; pulley: 65mmPU. (mobile comfort pad selection) product function: independent research and development of linear control chassis, can choose memory lock or angle lock; back pad back angle adjustment, humanized back tightness adjustment, four section height adjustment; waist close to automatic elastic support; seat height, seat depth adjustment; 4D no button handrails adjustment (high and low, front and back, front and back, front and back, Left and right, angle)