| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.35 | USD | 20251114 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.79 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.3 | USD | 20251113 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.89 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.24 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.78 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.28 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.46 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.92 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.2 | USD | 20251107 |