gas spring for chair
type:100,120,140,180,200
different rod diameter
different rod length
different cylinder diameter

   gas spring  for chair:

1.different rod diameter

2.different rod length

3.different cylinder diameter

4.different cylinder length

5. stroke length

6.extend force

7.surface treatment:coated or chrome plated

8.different stroke

9.type:100,120,140,180,200

10. long life time