| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.29 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.26 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.85 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.93 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1057.5 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 966.45 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 965.09 | USD | 20250801 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1056.0 | USD | 20250801 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1056.03 | USD | 20250731 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 965.12 | USD | 20250731 |