RingFi is an Experimental Approach to the Circular Economy and sustainable DeFi. This is because all the gears are adjusted to be fully oriented to the Circular Economy models. This is why the rebases are adjusted for the long term, the Treasury funds guarantee the price and the Risk-Free Value funds guarantee the rewards, in addition to the negative incentives for selling (fees) and the positive incentives for holding (rewards, automatic supply control, and Auto-Liq System), recreate circular and sustainable capital flows. Over time the project will be able to achieve self-sustainability.