▻PU/genuine leather options ▻Yellow resistance, abrasion resistance, insect resistance, hydrolysis test ▻High density foam ▻Chrome arm,solid wood armrest top pad ▻Tilting mechanism ▻SGS certified gas lift,grade 3 ▻¢680MM 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 chrome flat tube base ▻High back chair package：2pcs/ctn，0.24m3/pcs, G.W：26kg/pcs Low back chair package：2pcs/ctn，0.2m3/pcs, G.W：23kg/pcs Visitor chair package：2pcs/ctn，0.193m3/pcs, G.W：17kg/pcs