联合国开发计划署（UNDP）：2025年战胜塑料污染：塞舌尔押金退还计划的关键见解和经验教训报告（英文版）

For Small Island Developing States, where plastic leakage has major environmental and economic costs, deposit-refund schemes offer a practical way to cut waste, recover materials and fund long-term waste management. Seychelles is a regional pioneer, with its early national PET bottle deposit-refund schemes showing how such systems can be effectively designed and managed in an island context.This case study documents Seychelles’ development of its deposit-refund schemes. It highlights the proc