某个ETF产品以上证50指数为标的，ETF净值估计为上证指数的1%，其最小申购、赎回单位为（ ）万份。

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SQL Error: select id,body,options from ***_enewstiku where sourceid='25174' and id < 2135520 and id<>'2135520' order by id desc limit 5 SQL Error: select id,body,options from ***_enewstiku where sourceid='25174' and id > 2135520 and id<>'2135520' order by id asc limit 5