| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 304.16 | USD | 20251211 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.87 | USD | 20251210 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.79 | USD | 20251209 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.83 | USD | 20251208 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.89 | USD | 20251207 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.89 | USD | 20251206 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.89 | USD | 20251205 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.87 | USD | 20251203 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.7 | USD | 20251202 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.85 | USD | 20251201 |