Sigma systems co. Ltd. Was established in 1997, supplying computer memory SDRAM and DDR as the main products in the very beginning. Due to increasing demand from customers and the different market trend, we gradually expand our product portfolio and business scope.



Now, sigma systems has become a professional USB peripherals provider.

With the devotion and efforts made by the experienced management team, sigma has significant growth every year, and continuously provides the state-of-the-art products with excellent quality, and flexible services.