Ergonomic contemporary office chair

1) New design ergonomic mesh office chair& 2D headrest +2D lumbar support
2) Black pp with fiber back frame + fabric padded seat with injection molded foam inside+plastic seat bottom cover
3) Black fixed armrest
4) BIFMA passed CLASS 3 gaslift
5) 2.5mm thickness butterfly tilt & lock mechanism
6) BIFMA passed 340mm nylon five star base&BIFMA passed 60mm PU nylon castors