http://www.czce.com.cn/portal/qsfy/qhfg/A091402index_1.htm
http://www.shfe.com.cn/regulation/exchangelaw/
http://www.dce.com.cn/dalianshangpin/fg/fz/qhflfg/index.html
http://www.cffex.com.cn/flfg/qhfg/
http://www.ine.cn/regulation/exchangelaw/
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