| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 919.63 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 901.32 | USD | 20251013 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.8 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 919.1 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 919.1 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 926.13 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.8 | USD | 20251010 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 900.12 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 918.4 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 919.01 | USD | 20250930 |