| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.34 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.47 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 346.07 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.2 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 331.95 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 381.39 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.26 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.2 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 360.2 | USD | 20251202 |