| Vendor | Spec | Unit | Price | Currency | Date |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.64 | USD | 20251129 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.43 | USD | 20251119 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.47 | USD | 20251118 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.55 | USD | 20251115 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.55 | USD | 20251114 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.53 | USD | 20251112 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.44 | USD | 20251111 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.47 | USD | 20251110 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.52 | USD | 20251109 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.52 | USD | 20251108 |