Black Friday: lifetime access is on a special offer in the app, until November 30. Black Friday: special offer on lifetime access, until November 30. Download
기술혁신은 기업의 경쟁력을 높이는 데 중요하다.gisulhyeoksin-eun gieob-ui gyeongjaengnyeok-eul nopineun de jungyohada.Technological innovation is important for enhancing a company's competitiveness.