中文摘要：

本土企业攀升全球价值链不仅是改变产业“低端道路”的路径依赖，也是发展中国家摆脱发达国家“俘获”的重要选择。以天津市电子信息产业为例，从跨国公司市场势力、产业链垂直预占及产业定位三个方面分析制约本土企业产业升级的因素。应明确产业定位、提升产业链创新能力、培育产业合作网络.

英文摘要：

Upgrading the global value chain of the local enterprises is not only to change industry ＂low road＂ pathdependence, but also to be an important choice of the developing countries to break away ＂caPture＂ of the developed countries. Taking the electronic information industry in Tianjin for example, the paper studies local enterprises facing bottleneck of industrial upgrading on three aspects： Market power from the multinationals enterprises, the vertical chain at：counts and pre - positioning. At last, the paper puts fi）rward three suggestions to promote the local enterprises on three aspects： a clear industry position, improvement of the industrial chain innovation and the cultivation of industrial cooperation networks.