Building regional innovation systems (RISs) has become an important measure for China to implement an innovation-driven development strategy. but a moderately complex way to describe the characteristics of the RISs is needed for aiding the implementation of this strategy. Based on the subject-resource-environment (SRE) framework with five secondary conditions. this study takes 31 regi... https://wholelatteslovers.shop/product-category/electric-kettle/