We are specialized production 6N single crystal copper, 5N single crystal silver wire base. In many years ,our production achieve the international top standard, The customer of every country in the world praise are unceasing. We are all based on customer demand,specifications and the quantity customization you need products. Please tell me your need. I will give you a best product pricing. Now , we hope that have the opportunity to be able to send the sample to you to test our product. If you are interested in our products, please contact with us at any time or visit our website: www.zzyuhui.com