Research on institutional innovation of northeast old industrial base Research on regional technology innovation competitiveness of northeast old industrial base 并列题名：Research on regional technology innovation competitiveness of northeast old industrial base and research on institutional innovation of Guangdong Free Trade Zone Comprehensive revitalization and all-round revitalization of northeast old industrial base Biography of model workers in northeast old industrial base 并列题名：Comprehensive revitalization and all-round revitalization of Northeast old industrial base Research on growth and institutional innovation of private enterprises in China research on micro-innovation of corporate and social governance Biography of model workers in Northeat old industrial base