| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.32 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1251.61 | USD | 20251128 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.49 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1251.78 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.21 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1251.48 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1250.95 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.71 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1250.58 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.36 | USD | 20251124 |