| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.08 | USD | 20251030 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.6 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.43 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.43 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.72 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.43 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.43 | USD | 20251029 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251028 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251028 |