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https://blog.stranity.com.tw/2017/02/20/%e5%8f%b0%e6%8c%87%e6%9c%9f%e7%9a%84%e7%b1%8c%e7%a2%bc%e9%9d%a2%e4%ba%a4%e6%98%93/
台指期的籌碼面交易