| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.33 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.29 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.1 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.06 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.1 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.06 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251010 |