Tianjin Samsung SDI Co., Ltd. is a joint venture invested by Korea Samsung Co. Ltd. and Tianjin Zhonghuan Electronics & Information Group with a total investment of 510 million USD. and registered capital of 177.7 million USD. The company is a manufacturing enterprise for producing environment-friendly rechargeable lithium-ion battery, mainly producing two kinds of angular and polymer lithium-ion battery. The existing 8 cell battery production lines and 13 battery pack production line have more than 11 million pieces monthly production capacity. The company is mainly providing cell phone lithium-ion battery for Nokia, Apple, Samsung and other mobile phone manufacturers. By the end of 2008, Samsung SDI has taken 17% global battery market share, ranking the second in the world. Samsung SDI will continue expanding its battery business towards the first place in the world.