| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1252.55 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.74 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1076.63 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1076.12 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.22 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1097.22 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1251.95 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1280.09 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.25 | USD | 20250929 |