Crystal Card Technology Development Co., Ltd. was established in 1999 in Changsha High-tech Development Zone, mainly engaged in the development of single-chip IC technology, circuit design, software development, system integration can provide customers with design, development, processing of various products made of control module to achieve the overall planning of services. The company developed the production of single-chip PC / SC smart card reader keyboard line with PC / SC 1. 0 version by PC / SC test card testing support ISO 7816-3 T = 0 / T = 1 smart card chip made of a single communication protocol , and keyboard PS / 2 series without external power supply (more>>)