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