For 4mm copper tube, everyone has different special concerns about it, and what we do is to maximize the product requirements of each customer, so the quality of our 4mm copper tube has been well received by many customers and enjoyed a good reputation in many countries. Wuxi Baowang Steel Co., Ltd. 4mm copper tube have characteristic design & practical performance & competitive price, for more information on the 4mm copper tube, please feel free to contact us.