| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.9 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.9 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 870.04 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 870.04 | USD | 20251211 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.22 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 855.09 | USD | 20251210 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 868.98 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.85 | USD | 20251209 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 869.09 | USD | 20251208 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 854.95 | USD | 20251208 |