???“??????” ?????????

????:2021???????????:??????

?2?????????18?? (?????? ???)????????????????18????????,???????????????????????????,?????“??”,??????,???????????????“???”???,???????,??????????

?????????????“?????”?????????,??????????????????????,??,??50????????(????????????)?????????????,??????500???????????????,??1-3????????,????????????????????????????0.3%-0.5%/????????????,????????????????????????,??,???????????,??????,???

????????,“????????”??????????????,?????????,?????,????????????20??(???)???????0.3%/???,20?????0.5%/??????????????????????????????????????????????????????????????????????????????

??,?“?????”??????????????20?(???)???????,????????????20??????,???????????????,??????????????????????????????????(?) ?????????:??????