It's not state secrect that chinese companies have been encouraged /supported by the gov to get their hands on foreign resource.
http://finance.yahoo.com/echarts?s=000758.SZ+Interactive#chart2:symbol=000758.sz;range=6m;compare=mgo.ax;indicator=volume;charttype=line;crosshair=on;ohlcvalues=0;logscale=on;source=undefined