核发与认购是一种实物和环境权益解耦的交易方式，产品的物理流动不与环境权益的流动锁定。绿色材料与传统路径生产的材料一同参与传统的市场交易，不必区别对待；而环境权益则以虚拟证书的形式进行流转，以此降低绿色材料的流转和交易难度。

Redemption and Purchase Mechanism Illustration Model

Note: The illustration model is based on the steel industry, and the model may vary depending on the industry situation.

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