青云翻译

[10] Ding: "Shanxi Coal has developed China's first independent intellectual property rights short longwall mining", Jincheng broadcasters ,2010 -03-18, 16:23.

[10] Ding Lei: Jinmei group company developed the first independent intellectual property rights of short-wall mining, Jincheng broadcast TV station, 2010-03-18,16:23.

(10) Ding Lei: "The Jin Coal Group Develops Domestic First Proprietary intellectual property rights Short Wall Mining coal", Jincheng broadcast television station, 2010-03-18, 16:23.

[ 10] The Jin Ding Lei: coal Group developed the first Taiwan independent intellectual property rights of short wall, Jincheng coal Radio Television, 2010 - 03 - 18, 16:23.

[10] Ding Lei: Jinmei group company developed the first independent intellectual property rights of short-wall mining, Jincheng broadcast TV station, 2010-03-18,16:23.