We are specialized in all various kinds of torsion springs.

1). Material: carbon spring steel, alloy spring steel, stainless spring steel,aluminum, etc.

2). Finish: black oxide, zinc/nickel/chrome plating, power coating, passivate, oiled to prevent rust, and so on.

3). High good quality and long service-life.

4). Good hardness and resistance to both high and low quality.