| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.74 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.74 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.74 | USD | 20250815 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.3 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.3 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.3 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.51 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1163.49 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1177.3 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1166.08 | USD | 20250813 |