CPU Card:
CPU Card/SIM card:
CPU card embedded chip is a special single-chip microcomputer, with internal contrller, memory, time control logic unit, arithmetic unit and operating system, becauseacpu  Card has large memory capactiy, nowadays the chip memory capacity widely used are 16K and 32K, with high processing capacity, safe information storage. Therefore, these cards are widely used in conditions where information security is especially important.
Social-security card:
Zhejiang Wangu developed independent copyright CPU chips card operation system, and launched a new product WGCOS v 2.0. In 2003.
Financial card:
Wangu financial card WGCOS 1.1 is developed independently by Zhejiang Wangu Teach, has a independent copyright high-capability CPU card, coordinate the operation system MCOS of the independent development high-security CPU card