전략적 제품 홍보
???? ?? ??? ???? ???? ??? ???? ????, ?? ???? ??? ???? ???? ?? ?????. ???? ??? ??? ???? ??? ??? ????? ????, ???? ?? ??? ???? ???.
??? ???
??? ???
???? ??
???? ??? ?? ??? ???? ???, ?? ??? ??? ? ????.
??? ??? ???: ??? ???? ??? ?????
??? ???? ??? ???? ??? ?? ?? ????. ???? ??? ???? ?? ??? ??? ?????