YUNTONG -- One of the leading manufacturer to research and develop Sealed Lead-Acid batteries, then to NI-MH / NI-CD & most advanced technology Lithium-ion cylindrical and Lithium Polymer batteries. All batteries UL,CE approval, also the ISO9001 2000 certification. Nowadays about 40Kpcs SLA battery, 50Kpcs Li-ion & 40Kpcs Lithium Polymer battery output per day,YUNTONG not only focus on production innovation but also research continuously, YUNTONG has a research center cooperated with university, this improve YUNTONG products with advanced technology and more excellent quality. Success to 15 years production and marketing experience, YUNTONG brand has high reputation in home and abroad, all YUNTONG staffs continuously provide you best and professional service. Choose YUNTONG as your reliability partner, developing together!