| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.59 | USD | 20251112 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.22 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.05 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.05 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.34 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.05 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.05 | USD | 20251111 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1185.5 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.39 | USD | 20251110 |