We focus on lithium battery pack for 10 years and produce electric bicycle by ourselves from 2013. The major part-----lithium battery, which is more stable, this is the most advantaged during electric bicycle manufacture. Our lithium battery factory was built in 2008 and start to produce electric bicycle from 2013. At 2016, we built new office" Youcheng" to start to produce e-bike with our brand. There's 2000 square and 50 workers now in our factory. The produce capacity is 5000 sets or more for one month.