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2001年6月初,在第四届中国国际智能卡博览会上,清华同方股份有限公司电子商务事业部正以全新的姿态进军智能卡产业。该公司主要从事城市公共事业电子付费技术和电子商务信息安全技术的研发和应用系统建设,研制、生产和销售IC卡产品及相关软件,承建适合各行业的电子商务系统。清华同方十分重视自主版权CPU卡操作系统,成功开发的ZTCOS、TFCOS全面符合ISO7816、《中国金融集成电路（IC）卡规范》、ISO14443标准。该公司以双界面智能卡技术为核心,与
In early June 2001, at the 4th China International Smart Card Expo, the e-commerce division of Tsinghua Tongfang Co., Ltd. was entering the smart card industry with a new attitude. The company is mainly engaged in research and development and application system construction of electronic payment technologies and e-commerce information security technologies for urban public utilities. It develops, manufactures and sells IC card products and related software, and builds e-commerce systems suitable for various industries. Tsinghua Tongfang attaches great importance to its own proprietary CPU card operating system. Successfully developed ZTCOS and TFCOS are fully compliant with ISO7816, the “China Financial Integrated Circuit (IC) Card Specification” and the ISO14443 standard. The company’s core dual-interface smart card technology