| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.31 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1210.31 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.91 | USD | 20250915 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.14 | USD | 20250915 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.65 | USD | 20250913 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.49 | USD | 20250913 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1171.52 | USD | 20250912 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.49 | USD | 20250912 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.49 | USD | 20250912 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1196.86 | USD | 20250912 |