<span style、"font-family: 宋体; font-size: small;"><span>产品的核心技术</span></span>
<span style、"font-family: 宋体; font-size: small;"><span>顾客基础</span></span>
<span style、"font-family: 宋体; font-size: small;"><span>生产系统</span></span>
<span style、"font-family: 宋体; font-size: small;"><span>销售渠道</span></span>