http://www.mofcom.gov.cn/aarticle/b/e/201112/20111207910188.html;  http://wms.mofcom.gov.cn/article/zcfb/d/p/201112/20111207901475.shtml;  http://www.mofcom.gov.cn/article/huiyuanzl/fazzn/201207/20120708241732.shtml;  http://english.mofcom.gov.cn/article/policyrelease/buwei/201209/20120908366759.shtml