1)  main material: carbon spring steel ,alloy spring steel, refractory steel, stainless steel, high temperature resisting alloy, corrosion-resistant alloy and bronze of the suspension spring

2)  Finish: chromium-plated, zinc-plated, gold-plated, silver-plated, copper-plated, tin-plated and nickel-plated, painted, spraying powder, coloring

3)  the quality management system of our company has certified by china certification center (CQC) ISO9001:2000

4)  over a decade of production experience, shorter lead time and best price,factory price

If you are interested in our products, please contact me. I am expecting a happy cooperation with you, thanks.