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  • bitdays.co.kr/2021/05/08/%ec%9e%90%eb%8f%99%ec%b0%a8-%ed%9c%b4%eb%a8%bc-%eb%a8%b8%ec%8b%a0-%ec%9d%b8%ed%84%b0%ed%8e%98%ec%9d%b4%ec%8a%a4-hmi-%ec%8b%9c%ec%9e%a5-%ec%a0%84%eb%a7%9d-2021-%ea%b0%80%ea%b2%a9-%ec%a0%84%eb%9e%b5/ (port 80)