braavos---jediswap

multichain ---use arbitrum bridge to zksync

slingshot finance---arbitrum USDC swap to ETH

syncswap---ETH swap to WETH, WETH swap to USDC, add USDC/ETH pool

https://app.multichain.org/

https://app.jediswap.xyz/#/swap

https://syncswap.xyz/intro