| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1477.87 | USD | 20251011 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1477.69 | USD | 20250923 |
| Jinan Pulaihua Chemical Co., Ltd. | China national standards | MT | 1477.1 | USD | 20250918 |