???? ???? เปิดโลก "Gray Marketing" : ปลุกยอดขายแบบจัดหนัก
???????? ??? ??? “Gray Marketing” ???? ?????? ??????? ????? ?????????? ??????????.
Gray Marketing ??? {??????????????? ???????????????????????? ????? ???? ???? ???????.
?????????? ??? ???????????????????? ???????? ????? ?????? ??????? ????????? ??????????.
?? ?????????? Gray Marketing : ????????