| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.37 | USD | 20250726 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.15 | USD | 20250726 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.17 | USD | 20250726 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.37 | USD | 20250725 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.17 | USD | 20250725 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.77 | USD | 20250724 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.95 | USD | 20250724 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1120.68 | USD | 20250724 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 1260.26 | USD | 20250723 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1236.45 | USD | 20250723 |