| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1051.35 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1135.46 | USD | 20250814 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1135.25 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1051.16 | USD | 20250813 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.16 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.17 | USD | 20250812 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.37 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.35 | USD | 20250811 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1134.74 | USD | 20250809 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1050.69 | USD | 20250809 |