This article introduces Carbon DeFi launched by Bancor, a decentralized exchange (DEX) specifically designed for professional market makers, aiming to achieve precise, controllable, and programmable liquidity management. Traditional DeFi lacks the pricing logic, spread configuration, directional execution, and real-time adjustment functions required by market makers. Carbon DeFi enhances market-making efficiency and risk control capabilities by introducing asymmetric liquidity primitives, supporting one-way customized strategies, deterministic execution, and advanced automation. The platform offers execution tools such as auto-compounding liquidity, limit orders, range orders, and cyclic orders, along with professional trading suites including simulators, real-time activity tracking, and chart design. Carbon DeFi also features a highly efficient on-chain arbitrage solver system, significantly improving order execution speed and accuracy. Governed by the Bancor DAO, this product aims to transform on-chain trading from passive liquidity to programmable execution, empowering market participants to achieve more professional capital operations.