| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251101 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.02 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.02 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.58 | USD | 20251031 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 987.81 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.32 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.7 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 988.1 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1305.46 | USD | 20251028 |