发展中的北成集团光盘产业北成集团董事长孙庆君一、北成集团概况北成集团是适应现代电子信息技术高速发展而迅猛崛起的高新技术实体企业，集团以电子信息技术为核心，集电脑整机、系统软件、办公自动化、网络工程、数据库、光盘、信息服务等于一体，兼营广告展览、房地产... Beicheng Group’s Optical Disk Industry Development Bei Qing Group Chairman Sun Qingjun I. Overview of Beicheng Group Beicheng Group is a high-tech entity that rapidly adapts to the rapid development of modern electronic information technology. The Group focuses on electronic information technology as its core technology. The whole machine, system software, office automation, network engineering, database, CD-ROM, and information service are all integrated into one another. It is also an ad exhibition, real estate...