| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.51 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.45 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.14 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.26 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 353.31 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.44 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.71 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 388.64 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 395.54 | USD | 20251129 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 367.29 | USD | 20251129 |