2022 We designed innovative stackable and wall mounted LiFePO4 batteries. Our products have been extremely popular in the market. We also improve battery communication function to compatible with most of popular inverters on the market 2021 The solar home energy storage market really hot, we started designing and producing these series batteries and improving their additional functions, such as Bluetooth monitor, RS485 and CAN Communication functions. 2020 Our products had included LiFePO4 battery, lithium battery pack, ebike battery and portable power bank and power sation 2019 We have provided as many as 2,000 customized designs of LiFePO4 batteries / ebike batteries to customers around the world, and won unanimous praise. 2018 Our self-developed 110V/220V AC portable power bank was launched. In the same year, we participated in exhibitions in Hong Kong, Southeast Asia and Europe. 2017 With the entry of LiFePO4 battery series products into the market, we began to produce customization LIFePO4 batteries and develop big capacity energy storage LiFePO4 Batteries and low speed Electric Vehicle LiFePO4 batteries. 2016 Delong Factory was located in Qingxi Dongguan. Our factory covered 5000 square meters and had 200 professional workers 2015 Design, development and production of electric bicycle batteries. 2014 We had a over 2000 square meters production workshop and began offline exhibitions. 2013 Expanped our overseas sales team and established sales center, our lithium battery packs and power bank products are distributed all over the world. 2012 We added a power bank production line and started selling 2010 Established company and focused on developing lithium Ion battery products for our business direction