????:1??????????:????????300

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??1??20?????????????????????????? ????,?????????????,?????????«?»(GB16171.1-2024),????????????????2012????????????«?»(GB 161712012),????,?????????????????,????????????????????????

???,??,2023???????????4.9??????????,???????????????70%?????????????????,????????????4??????????????????????????????????,????????????????,?????,?????????????????????????????????????,????????,???

?????????????,???????????????????????50%?40%?70%?50%???,????????????????????,?????????,???????????????2027???????????????1??????????1????????????????????,????????????,????80%??,????​​​​ ???:?????????????????????