The frame: Be shaped by the plywood, with the veneer. Cushion: Elastic PU foamArmrest: Solid wood (or upholstery by PU foam)Leg: Die-cut by quality cold-rolled steel plateFeaturing: Slowing risen device Reward the National PatentAdditional function: fire-retardant, bring wind for fixed seat room, written tablet and so on.Usage: Theater, hall, auditorium.