Our company are specilized in all kinds of compression springs, torsion springs, extension spring and specail springs.1. wire diameter of compression spring:0.2mm~10mm2. Material range: carbon steel, alloy spring steel, music wire, steel, and stainless steel, iron, plated steel, alloy steel , bronze, phosphor copper, and beryllium copper;etc.3. surface treament:black oxide , Zinc/Nicke/Chrome plating, power coating, oiled to prevent rust, passivate, etc.
