We use the "non-custodian" option. That being said, any liquidity injection in UniswapV3 is obvious. izumi serves as a custodial mining platform. Any money held by the users, including LP tokens staked on the izumi platform, is stated in the smart contract to be returned only to the user's wallet address under any conditions, with Izumi and the project party having no right to touch the user's liquidity. It can totally reduce security risks.