▻PU/genuine leather options ▻Aluminium arm/3D PU armrest top/3D wooden armrest top options ▻High density molded foam ▻Synchronized mechanism with 5 locking positions ▻Adjusting Angle of seat -1°~10°，back 90°~110° ▻SGS certified gas lift,grade 3 ▻¢700MM aluminium base weight capacity 1134KGS，ANSI BIFMA standard ▻2.5inch SGS certified PU caster，98,000 times no damage ▻Visitor chair：full molded foam，2.0MM thickness square tube chrome base ▻High back:width 675MM,seat depth 510MM,seat height 480-600MM,total 1200-1320MM Low back:width 675mm, seat depth 510MM,seat height 480-600MM,total 1030-1150MM Visitor:width 590MM,seat depth 510MM, total height 1170MM ▻High back chair package：1pcs/2ctn，0.218m3/pcs, G.W：28kg/pcs Low back chair package：1pcs/2ctn，0.218m3/pcs, G.W：27kg/pcs Visitor chair package：2pcs/ctn，0.171m3/pcs, G.W：20kg/pcs