Black mesh office chair without backrest

·Black PP with fiber back frame,flexible lumbar support, upholstered with single layer mesh, HUAYU brand
·Molded foam, 45kg/m3 seat foam 50mm thickness,12mm thickness plywood with plastic cover under the seat, upholstered with black fabric, HUAYU brand
·Black PP Hight Adjustable armrest
multifunctional machanism with 3 locks
·100#black class 3 gas bar, Bifma5.1 QY brand
·340mm black nylon base
·φ60MM black PU casters