This integrative evidence review examines circular production systems and waste reduction in manufacturing clusters by asking how circular production systems is connected to waste reduction and which conditions determine whether that connection becomes operationally meaningful. The article synthesizes peer-reviewed and institutional literature relevant to industrial assets, production systems, infrastructure, and built environments, emphasizing mechanisms, boundary conditions, and measurement choices rather than a universal average effect. The synthesis identifies complementary roles for resource-loop design and waste prevention, operating environment, and governance or coordination routines. No survey, interview, experiment, proprietary dataset, or regression estimate is represented as having been collected for this conceptual review.
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