| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.77 | USD | 20251121 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.61 | USD | 20251120 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.88 | USD | 20251118 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.09 | USD | 20251117 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.05 | USD | 20251114 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.83 | USD | 20251113 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.0 | USD | 20251112 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.82 | USD | 20251111 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.88 | USD | 20251110 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 383.99 | USD | 20251107 |