| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.43 | USD | 20251028 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.33 | USD | 20251027 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.17 | USD | 20251023 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.12 | USD | 20251021 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 302.93 | USD | 20251020 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 303.03 | USD | 20251017 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 302.95 | USD | 20251016 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 302.84 | USD | 20251015 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 302.79 | USD | 20251013 |
| Shandong Zhenkun New Materials Co., Ltd. | China national standards | MT | 302.61 | USD | 20251012 |