1: Casters: ordinary casters, PU wheels (soft materials, suitable for wooden floors, and machine rooms).
2: Chair legs: The thickness of the iron frame directly affects the service life of the chair. Surface treatment: polishing, spray painting, baking varnish (surface gloss, not easy to peel off), electroplating to delete the atlas (wood frame can not be electroplated), the electroplating quality is good, and it is not easy to rust.
3: Pneumatic rod: also called the extension rod, is used to adjust the height and rotation of the chair.
4: Chassis: the part holding up the seat, the bottom is connected with the air rod.
5: Chair seat: It is composed of wood, sponge, and fabric. The quality of wood boards is usually not felt by consumers. Sponge: recycled cotton, new cotton. 99% of manufacturers use the two together, the thicker and harder, the higher the cost, the thickness is appropriate, and the hardness is appropriate. Press the chair seat with your hands, Materials: Ma Rong, mesh, leather. The plastic frame is pressed into the net cloth. This type of chair is more in line with breathability.