1) ordinary plastic feet: now basically eliminated, poor quality and reliability. Most are small chairs in use. Due to the recycling of plastics, these products are relatively environmentally friendly.

2) nylon plastic feet: now a lot of use, quality and multi-grade. If the wheels are not installed on the five-jaw, the five claw tip with pad pad, weight 1.5 tons of the car, the wheel pressure on the five claws, or static pressure, the quality is completely assured. Due to the recycling of plastics, these products are relatively environmentally friendly.

3) Steel iron feet (paint, plating): easy to rust, the weld easily cracked.

4) wooden feet: iron frame, wood surface only play a decorative role.

5) Aluminum alloy feet