S. L Design & Manufacture Limited is a manufacturer specializing in the research, production, and sale of digital products and other gifts, including USB flash disk, USB flash drive, USB flash memory, USB flash stick, pen drive, pendrive, USB flash disk, webkey, memory cards, Micro SD cards, SD cards, Battery Case and Portable Power Bank, USB hub, USB mouse, bluetooth mouse, 3D pedometer calorie USB flash disk, LED watch USB flask disk and smart watch calorie USB flash disk, silicon gifts.