▻Patented product, patent number：ZL201130120936.5 ▻TUV certified, passed ANSI BIFMA X5.1-2011 test ▻Nylon+fiber plastic back, black/white options ▻Mesh back imported from Taiwan, fabric cover seat ▻3D/2D adjustable arm options ▻High density molded foam ▻Synchronized mechanism with 5 lockable positions(including condition of rest) ▻Slider seat, seat can up and down ▻The seat cloth can be taken apart and washed ▻Grade 3 SGS certified gas lift ▻Φ680 mm Aluminium base/nylon base options bearing capacity 1133KGS ▻ Φ2.5 inch PU caster SGS certified，at least 100,000 times friction ▻Swivel chair：width 650MM,seat depth 450-510MM，seat height 450-510MM,total height 1170-1230MM ▻Package Swivel chair：1pcs/1ctn,0.233m3/pcs, G.W:22kg/pcs