| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.07 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.95 | USD | 20251124 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.62 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.72 | USD | 20251121 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.36 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.25 | USD | 20251120 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.65 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.76 | USD | 20251119 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 853.84 | USD | 20251118 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 867.96 | USD | 20251118 |