| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 180.81 | USD | 20251202 |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 176.49 | USD | 20251114 |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 183.4 | USD | 20251104 |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 179.27 | USD | 20251029 |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 168.9 | USD | 20251010 |
| Shandong Haitian Bio-Chemical Co., Ltd. | China national standards | MT | 164.66 | USD | 20251001 |