Two decades ago, Nickel-Cadmium (Ni-Cd) and Nickel-Metal Hydride (Ni-MH) batteries were the most appropriate for small-sized rechargeable batteries, so were for the mobile phones. In the 1990s, we established business partnerships with the most well-known brands. The first result was the assembly of Ni-Cd and Ni-MH battery packs built into mobile phones. Today, we assemble batteries for e-toll devices and bank card readers.