| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.34 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.52 | USD | 20251020 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.46 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.65 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.6 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.37 | USD | 20251017 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 394.54 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 366.36 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 352.27 | USD | 20251016 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 387.5 | USD | 20251016 |