solar panel to anderson plug factory COMPANY PROFILE ONESUN is a unique company. It has vertically integrated all technologies required by ESS (Energy Storage System), including cells, BMS, energy storage inverters and system integration, since 2010. One of our founders is from BYD battery technology leader, one founder who graduated from Postdoctoral has been focusing on photovoltaic industry,website:http://www.onesunpv.com/