Speak with others using clear and professional language, and answer telephones using appropriate etiquette. https://gmbni.com/%EB%B0%A4%EC%95%8C%EB%B0%94-%EA%B5%AC%EC%9D%B8%EA%B5%AC%EC%A7%81-%EC%97%AC%EC%84%B1%EB%93%A4%EC%9D%98-%EC%83%88%EB%A1%9C%EC%9A%B4-%EA%B8%B0%ED%9A%8C%EB%A5%BC-%ED%96%A5%ED%95%98%EC%97%AC/
