Shenzhen OSN Tech Co.,Ltd is specializing in battery,LiPo4 battery,starter battery and Li-on battery,which is suerior , safety,environment-friendly,high power and non-momery effect,lifepo4 is a significant breakthrough in the power battery industry.Found in Oct,2001,our company is lacate in Shenzhen,the most prosperous coastal city in China.Our main products-lifepo4 power battery are in the leading position in the power battery industry. Ackowledging that quality is the life of a company,we strictly carry out ISO9001 standards as a guidance from product design and matrial perchase to production process,quality control,sales,ane\d after-sales severice.We received ISO9001:2000 international approval from BSI in Britain.Also we have passed the evaluations of EC and UL Our on time deliverly can surly fulfill your expectation.We also have a prominent customer service team to provide one-to-one comprehensive after-save service for new and old customers.we offer the lastest design products with high quality and speedy delivery. We are looking forward to establishing a good business relationship with you.