Dongguan Billion Electronic Technology Co. Ltd was established in 2018 and specializing in design, manufacture and sales of high-performance lithium ion batteries.br12 battery pack production lines and high-precision testing lines.br s products have excellent quality and can meet the certification such as C Q C, C E P S E, K C U L etc.,brChargeek is committed to provide one-stop procurement service such as battery cells> battery packs B M S,battery chargersas well as others related products. ,brIf you have any request> pls feel free to contact us soon. br