Best sell high back mesh modern office chair wih 3D arm

1) Best quality office mesh ergonomic office chair
2) Mesh back + Nylon back frame; Airbag lumbar support;Right handle to charge air, Left handle to release air; Height adjustable lumbar support;
3) New design 3D armrest with soft PU armpad;
4) injection molded foam seat with PU padded uphostery
5) BIFMA passed multi-functional mechanism with back reclining&locking functions
6) BIFMA passed CLASS 3 gaslift
7) 350mm alumnium base with BIFMA passed 60mm PU nylon castors
8) Seat can add sliding function(seat sliding forward&backward)