Agglomeration of producer services, agglomeration of manufactures' innovation and R&D efficiency 并列题名：Agglomeration of producer services, agglomeration of manufactures' innovation and R&D efficiency Influence and countermeasure of producer services agglomeration on manufacturing transformation and upgrading in western China 并列题名：Influence and countermeasure of producer services agglomeration on manufacturing transformation and upgrading in western China Research on producer services agglomeration and urban economic transformation and development Research on the producer service agglomeration and resources misallocation improvement Research on the impact of producer services agglomeration on manufacturing servitization