| Vendor | Spec | Unit | Price | Currency | Date |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1352.63 | USD | 20251020 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1353.08 | USD | 20251017 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1352.72 | USD | 20251016 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1352.21 | USD | 20251015 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1351.71 | USD | 20251014 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1351.98 | USD | 20251013 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1351.2 | USD | 20251011 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1351.2 | USD | 20251010 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1350.17 | USD | 20251009 |
| Dongying Hebang Chemical Co., Ltd. | China national standards | MT | 1351.07 | USD | 20250930 |