| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.28 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1116.15 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1101.76 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.88 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.82 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.88 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1130.01 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1115.41 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1129.53 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1108.35 | USD | 20251125 |