| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.8 | USD | 20251211 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.33 | USD | 20251209 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.38 | USD | 20251208 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.54 | USD | 20251204 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.43 | USD | 20251203 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.21 | USD | 20251202 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.4 | USD | 20251201 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.24 | USD | 20251128 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.29 | USD | 20251127 |
| Shandong Hongyang Chemical Co., Ltd. | China national standards | MT | 384.2 | USD | 20251126 |