????:1??????:???????

2???????????

3???sn??

4????????

5???????

?11???????????????????????????27??????????????????????? ???,?????????????????27???????????,????“?”???????,??????????????????????????,????????????????????????300?????????

???????????“????????????????”??????????????,??????????,?,?????,?????

?????????,??,??????????????

??B2B???????????2025??,“?????”??????????????(?) ?????????????:???????????????????????