| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 379.9 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.76 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.65 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.83 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.72 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.92 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.12 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 359.0 | USD | 20250829 |