????????2?19??????????(??)????????????????,????????????????????????????,??????????“????”?
??????2?19??,???? ????????????????
??2??19??,????????????? ??
?????2??19?,???????? ?
??“?”,??????????,??,??,?????????????(?)
???????:???
??????????????????6???
PPI??5????????????
???:?????????????
????:?????????????????????…
???????10????3-2????????
??:???????????????
????????2????????????
??:???????????????
?????????????????????
????2016????2146??????????…
???????????????IPO????
??????????????????
????15????????????:????
??????????????????????
??????:????????????
??-????Indy500??????????
??????????????5???3???
??:????????????????
????????????????????
??????????????????6???
2017???????????:??????
????????????54???
???100?????????????0.01?
??????????????????????
?????????????????????????