| Vendor | Spec | Unit | Price | Currency | Date |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.17 | USD | 20251020 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.23 | USD | 20251017 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.18 | USD | 20251016 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.04 | USD | 20251014 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 183.08 | USD | 20251013 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 182.97 | USD | 20251011 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 182.84 | USD | 20251009 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 182.96 | USD | 20251008 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 182.96 | USD | 20251007 |
| Tangshan Sanyou Chemical Industries Co., Ltd. | China national standards | MT | 182.96 | USD | 20250930 |