1.We can produce a variety of pressure spring according customers' sample. 2.Wire Dia:0.1mm-10mm. 3. ... have imported stainless steel,piano wire,carbon steel,phosphor,bronze and so on. compression spring can available in many fields,Auto ,industry,etc ... . 1. Material: carbon steel; spring steel; alloy steel; stainless steel.2. Wire Dia.: 0.01mm ...