Industrial symbiosis is a concept where different industries and businesses work together to use each other's byproducts, waste, or resources in a mutually beneficial way. This collaboration helps to optimize resource use, reduce waste, and create a more sustainable and circular economy. By sharing resources and materials, industrial symbiosis minimizes the need for new raw materials, promotes recycling and reuse, and reduces the environmental impact of industrial activities. Overall, industrial symbiosis plays a crucial role in promoting circularity by closing the loop on material flows and fostering a more efficient and sustainable industrial ecosystem.