1. Our facilities is able to producing most of spring. 
2. We provide engineer assistance to help you design your battery spring and it is free.
2. The raw material will be tested its heavy element per batch by authority testing company, we can offer the test report to you depending on your requirement.
3. the raw material can be steel, iron, copper etc.
4. Surface coating: zinc,gold,silver,copper,dacro,black oxide, static spraying plastic, etc.
5. We can offer test report of heavy element for our product per batch to you depend on your  requirement.
6. Very thing is negotiable, We stick to the sincerity is first and client is highest. Please feel free to contact us. Let's begin a wonderful cooperation and common development with each other.

Extensively used for various battery