Yangzhou donva electronics and springs CO. LTD

http://yangzhoudonva.itrademarket.com

Our company are specialized in all kinds of compression springs, torsion springs, extension spring and special springs.
1. wire diameter of compression spring: 0.2mm~ 10mm
2. 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.

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