| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.35 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.35 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1168.54 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.35 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.62 | USD | 20250908 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1182.03 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.78 | USD | 20250906 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1167.96 | USD | 20250906 |