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▻ANSI BIFMA Quality verification standard ▻nylon+fiber plastic back frame in black color ▻Adjustable headrest,activity range:75MM ▻With adjustable lumbar,rotate the knob to make loose or tight ▻Mesh back ,fabric seat
▻4D adjustable arm,7 grades,black soft PU armrest top
▻high density molded foam ,with black PP seat cover
▻Synchronized mechanism ,3 locking positions
▻Back angle :105~130°
▻Class 3 SGS certified gas lift 100MM
▻¢700MM 5 star aluminium base bearing 1134KGS
▻2.5 inch PU caster SGS certified ,at least 98,000 times friction