continue to enhance, to be certain solution top quality in line with market and buyer standard requirements. Our corporation has a excellent assurance program are actually established for 3s Bms 60a, Bms 10s 20a, 18650 Bms 4s, Bms 14s 52v,18650 Bms 4s. We guaranteed high quality, if clients were not satisfied with the products' quality, you can return inside 7days with their original states. The product will supply to all over the world, such as Europe, America, Australia,Florida, Munich,Romania, Croatia.We have a professional sales team, they have mastered the best technology and manufacturing processes, have years of experience in foreign trade sales, with customers able to communicate seamlessly and accurately understand the real needs of customers, providing customers with personalized service and unique products.