| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.95 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.89 | USD | 20251009 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.45 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.53 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 865.11 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 851.05 | USD | 20250929 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.29 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.35 | USD | 20250928 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 864.35 | USD | 20250926 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 850.29 | USD | 20250926 |