Product features XFZY-1L seat specially designed for middle-grade ,upscale engineering machinery vehicles ,its aerosol structure is a liquid damper and two extension spring merge constitution ,chassiss outside is protection by oil rubber protective , prevents the erosion by external sewage . Seat, backrest, head restraints are made of the technology which vacuum foaming a molding. Technical parameters A. The adjusting scope in the front and back : 175mm B. The biggest load of the chair is 50kg 130kg C. The chair highly adjustable range 60mm, divides three scales D. The seat back cushion angle may the regulation band anteversion 80°(not have localization), the caster 80°(has localization) E. Skin Material: Flannelette Optional accessories Headrest Safety belt Armrest Paper bags