| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.21 | USD | 20251110 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.54 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1250.78 | USD | 20251107 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1250.26 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.06 | USD | 20251106 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.47 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1249.63 | USD | 20251105 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1249.91 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1173.73 | USD | 20251104 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.03 | USD | 20251103 |