1: Castor: ordinary casters, PU wheel.
2: leg: iron thickness directly affect the service life. Surface treatment: polishing, painting, paint, plating, good quality, easy to rust.
3: gas bar: also called stretched down, adjust the height and rotation of the Chair.
4: chassis: connection to the gas bar.
5: seat: wood, foam, fabric composition. SpongeBob: recycled foam, new cotton. Both use with thicker hard, high cost, thickness, hardness is appropriate. Fabric: Ma Rong, mesh, leather. Plastic box, Internet access. In line with breathability.
6: armrest: thickness affect the quality.
7: back link (corner): made of steel pipe and steel plate connection plate is 6mm or 8mm. Width of less than 6cm,8mm thick.
8: Chair: mesh combined with breathability.
9: lumbar pillow for comfort.
10: head rest: comfort.