| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.75 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.78 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.78 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1125.86 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.71 | USD | 20250923 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1103.99 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.02 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1096.95 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1111.02 | USD | 20250922 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1125.08 | USD | 20250922 |