Shenzhen Grace Technology Development Co., Ltd, with the brand name TEFOO, specializes in the research, development, production, and sales of lithium-ion battery packs, offering comprehensive services. Our quality management system complies with various international standards, and our products are globally certified, enabling fast mass production. Our standard smart battery packs are well-suited for industrial instruments, medical equipment, and other applications, making us the most dependable and trustworthy partner for your needs!