| Vendor | Spec | Unit | Price | Currency | Date |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20251007 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20251005 |
| Jinan Dezheng Chemical Co., Ltd. | China national standards | MT | 957.01 | USD | 20251004 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 816.27 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1055.52 | USD | 20250930 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1139.96 | USD | 20250930 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 879.6 | USD | 20250930 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 886.64 | USD | 20250930 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 788.12 | USD | 20250930 |