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

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

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

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

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