| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1209.53 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1209.53 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1174.37 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1195.47 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1196.26 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.15 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.33 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.33 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.92 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.36 | USD | 20250929 |