| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 452.0 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.8 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.57 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.39 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.81 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.63 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.28 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 406.51 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | 90% | MT | 451.68 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 402.12 | USD | 20251121 |