| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 975.07 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1067.15 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 975.5 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1067.39 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1067.08 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 975.21 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1066.47 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 974.66 | USD | 20251202 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 975.14 | USD | 20251201 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1067.0 | USD | 20251201 |