1：Mid back swivel chair;
2：3D fabric for the backrest，with lumbar support ,mould foam seat with fabric；
3：2D armrest with PU cap, up&dowm adjust;
4：Bock wire control,Synchronous tilt mechanism,3 posistion locking ,5 position for the tension.
5：360MM aluminum base ,with Φ60MM PU caster，KGS Class 4 gaslift.