▻PU/genuine leather options ▻High density molded foam ▻Aluminium arm/3D PU armrest top/3D wooden armrest top options ▻Synchronized mechanism with 5 locking positions ▻Adjusting Angle of high back 105~125°，low back 110°~130° ▻SGS certified gas lift,grade 3 ▻¢700MM aluminium base weight capacity 1134KGS，ANSI BIFMA standard ▻2.5 inch SGS certified PU caster，98,000 times no damage ▻Visitor chair：high density foam，2.0MM thickness square tube chrome base ▻High back:width 730MM,seat depth 510MM,seat height460-560MM,total 1190-1290MM Low back:width 730mm, seat depth 510MM,seat height 460-560MM,total 1020-1120MM Visitor:width730MM,seat depth510MM,seat height440-560MM,total height 990-1110MM ▻High back chair package：1pcs/2ctn，0.222pcs, G.W：26kg/pcs Low back chair package：1pcs/2ctn，0.222cs, G.W：24kg/pcs Visitor chair package：2pcs/ctn，0.163/pcs, G.W：17kg/pcs