Shenzhen Keweixing Electronics Co., Ltd.is a self-owned enterprise which mainly specializes in designing ,developing, producing and selling usb gift since found in 2003.
Amsi electronic technology limited¡¡is a manufacturer specializing in the production and sale of USB flash disk, MP3 player , MP4 player,memory card and the other computer peripherals.
We have the ability, with bearing steel, stainless steel, carbon steel, glass, plastic and copper to manufacture precision balls up to G5, size ranging from 0.5mm to 250mm, especially the high-precision steel balls under 3mm.
