??
??1????????????????????20?????????????????? ?,????,???«??»(GB16171.1-2024),???????????????????????2012?????????????????????«??????????»(GB 161712012),??,????????????????,?????
??????,???????????????????????,2023????????4.9?,????????????????????70%?????????????????????,????????????????????????????????????????????4??????????????????,????????????,??????????,????????????????????????????????????????????,?,??????????????
???????,?????????????????50%?40%?70%?50%????????,??,?,????2027??1??1???????????????????????,??????????????????????????,????????????80%????,?????????? ??:?????????
?????????
?????«??»????????????????????????????