| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/15/2020 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/14/2020 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/14/2020 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/14/2020 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/13/2020 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/13/2020 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/13/2020 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/10/2020 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/10/2020 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/10/2020 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/9/2020 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/9/2020 |
| · | [Tungsten]Market Price of AmmoniumParatungstate in China | 4/9/2020 |
| · | [Tungsten]Market Price of Tungsten Concentrates in China | 4/8/2020 |
| · | [Tungsten]Market Price of Ferrotungsten70% in China | 4/8/2020 |