Shenzhen Happy Technology is a professional manufacturer and exporter of power banks,and other rechargeable battery packs,which are widely applied in charging mobile phones, tablet PCs,laptops and many other products. We also export cases and speakers for iPhone and iPad ，USB LED lights, USB fans,USB heaters and coolers, USB gloves,USB Christmas products and mini projectors. Six R&D engineers and advanced equipment such as SMT machines from Yamaha,ODM and OEM orders are welcome.