| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.69 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.74 | USD | 20250808 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1135.33 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1051.23 | USD | 20250807 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.29 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.31 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.99 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.92 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.53 | USD | 20250804 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.49 | USD | 20250804 |