# 5-1. Purchase Unit

Among the diverse values held by natural resources, initially, we will address the value that contributes to the reduction of greenhouse gas emissions (i.e., carbon credits) as an environmental benefit. The unit of carbon credit is "tCO2" (tons), and when purchasing SINRA's Regenerative NFT, buyers will select the "tCO2" amount and mint it themselves.

For the trading of carbon credits, the transaction unit is set at 1 tCO2 (transactions will be in whole numbers).

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