????:1???????:?????400?3??

2??????

3??????98?

4????????

5???????

????????????12???29?? (????)???????(????)29???????????,CR450???

???CR450-BF?(????????)

????????,CR450?????????????????????

?????????,??450?????????,?????400??????,?????????????

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

??,??22%,??10%?

?,?????2??????,????????4%?

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

??CR450-AF??????????(????)

???,??????2018????????????,??????????,???????????????400????????????????“???????????”??;2021?????????400??CR450?;2022?????CR450??????,?????????????2022?????2023??????,????????CR450???;2024??????(?????)

??????:???????????????????