This product is a main one at feeding of electrical arc furnace at Ferro alloys Industry plants such as Ferro silicon manufactory, so to the supply of this need the PARIZFAN Co, Provides this product by the follow table of specifications
| Grade | TDH1 | TDH2 | TDH3 | TDH4 | TDH5 |
| ASH(Max) | 4% | 5% | 6% | 7% | 8% |
| Volatile Matter | 12-15.5% | 12-15.5% | 9.5-13.5% | 11.5-15.5% | 11.5-15.5% |
| Compressive Strength(min) | 17Mpa | 15.7Mpa | 19.6Mpa | 19.6Mpa | 19.6Mpa |
| Resistivity(max) | 68 µ Ω m | 75 µ Ω m | 80 µ Ω m | 90 µ Ω m | 90 µ Ω m |
| Bulk Density(min) | 1.36gr/cm3 | 1.36gr/cm3 | 1.36gr/cm3 | 1.36gr/cm3 | 1.36gr/cm3 |