ECO2 %ED%94%84%EB%A1%9C%EA%B7%B8%EB%9E%A8 %EB%83%89%EB%82%9C%EB%B0%A9%EC%9E%85%EB%A0%A5%EA%B4%80%EB%A0%A8 %EC%A7%88%EB%AC%B8%EB%93%9C%EB%A6%BD%EB%8B%88%EB%8B%A4.