Tungsten> Import and Export Statistics> China Export> Export quota of Tungsten> Cumulative quota of Chinese ammonium paratungstate
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2014Jan 15, 2015
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2013Jan 15, 2014
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2012Jan 15, 2013
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2011Jan 15, 2012
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2010Jan 15, 2011
- Export Enterprise Cumulative Quota of Ammonium Paratungstate and Ammonium Metatungstate in China in 2009Jan 15, 2010
