
| ITEM | Crystal Powder | Granule | ||||
| Premium Product | First-class Product | Quality Product | Premium Product | First-class Product | Quality Product | |
| K2O % ≥ | 50.0 | 50.0 | 45.0 | 50.0 | 50.0 | 40.0 |
| Cl-% ≤ | 1.0 | 1.5 | 2.0 | 1.0 | 1.5 | 2.0 |
| H2O% ≤ | 0.5 | 1.5 | 3.0 | 0.5 | 1.5 | 3.0 |
| free acid (H2SO)4% ≤ | 1.0 | 1.5 | 2.0 | 1.0 | 1.5 | 2.0 |
| Size(1.00mm-4.75mm or 3.5mm-5.60mm)% ≥ | - | - | - | 90 | 90 | 90 |