| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.3 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.41 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.79 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.98 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.61 | USD | 20251205 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.81 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 923.19 | USD | 20251204 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.92 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.54 | USD | 20251203 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.03 | USD | 20251202 |