Cheap black mesh staff office chair nylon base swivel armchair for conference meeting room

Description:
1) Middle Back with office Swivel chair
2) High density mesh seating with mould sponse
3) Adjustable lumbar support
4) nlyon base with nylon casters
5) Double-functional mechanism, rocking and locking, heigh adjustable
6) PU armrest
8) 150kg capacity weight
9) Color Optional