| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.72 | USD | 20251128 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.76 | USD | 20251127 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.69 | USD | 20251126 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.56 | USD | 20251125 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.47 | USD | 20251124 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.35 | USD | 20251121 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.22 | USD | 20251120 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.43 | USD | 20251118 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.6 | USD | 20251117 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.57 | USD | 20251116 |