OKX and Circle integrate USDC into OKX products.

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According to an official statement, stablecoin issuer Circle and cryptocurrency exchange OKX are collaborating to introduce USDC functionality into the OKX wallet and OKX DEX aggregator. The OKX DEX aggregator becomes one of the first decentralized exchanges to support cross-chain swaps of USDC between Ethereum, Avalanche, Arbitrum, and the OP mainnet, with more blockchains expected to be supported soon. Additionally, OKX and Circle have jointly launched the "USDC Zero Network Fee Campaign," which is available from now until October 5th, allowing OKX wallet smart account users to enjoy fee-free transactions.

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This is worth looking into and understanding.