| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.57 | USD | 20251114 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.53 | USD | 20251112 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.39 | USD | 20251111 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.43 | USD | 20251110 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.52 | USD | 20251107 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.39 | USD | 20251106 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.31 | USD | 20251104 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.39 | USD | 20251103 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.33 | USD | 20251031 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.4 | USD | 20251030 |