| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.59 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.65 | USD | 20251127 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.43 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 922.37 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 904.01 | USD | 20251126 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 903.62 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 929.04 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.98 | USD | 20251125 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 928.76 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 921.7 | USD | 20251124 |