This question is really not too good to answer, because each manufacturer will say their own benefits, but as a user, because they have not used all the domestic manufacturers of nitrogen springs so the answer is not very objective, at present, often spring and Longxiang is good, belonging to the first-line domestic brands, other brands of nitrogen springs in the cost-effective a little higher.
---Taizhou Botai gas spring manufacturers to provide the answer, thank you