| Existing government policies and regulations are not supportive |  |  |  |  |  |  | 
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| Lack of incentives (eg, subsidies, tax breaks) |  |  |  |  |  |  | 
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| Circular products are more expensive to procure   than new products |  |  |  |  |  |  | 
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| Circular products are more expensive to  maintain than new products |  |  |  |  |  |  | 
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| Existing business models do not support circularity |  |  |  |  |  |  | 
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| Lack of availability of circular products |  |  |  |  |  |  | 
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| Lack of market demand for circular products |  |  |  |  |  |  | 
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| Lack of adequate financial resources |  |  |  |  |  |  | 
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| Lack of skills and competence to implement circular practices |  |  |  |  |  |  | 
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| Lack of willingness of stakeholders to adopt circular practices |  |  |  |  |  |  | 
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| Lack of adequate collaboration between stakeholders |  |  |  |  |  |  | 
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| Difficulty integrating with existing technologies, products, and practices (ie, lack of compatibility) |  |  |  |  |  |  | 
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| Lack of adequate innovations in products and practices (e.g., using technology to upcycle/downcycle used materials and business models to support it) |  |  |  |  |  |  | 
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| Lack of adequate storage facility for circular products |  |  |  |  |  |  | 
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| Difficulty of the sector to adapt to evolving National/European policies and regulations |  |  |  |  |  |  | 
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| Immature or fragmented supply chain for circular products |  |  |  |  |  |  | 
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| Lack of adequate time to plan and implement circular practices |  |  |  |  |  |  | 
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| A general sense of insecurity or uncertainty in adopting circular products and practices with consequential outcomes |  |  |  |  |  |  | 
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| Others |  |  |  |  |  |  | 
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