| Vendor | Spec | Unit | Price | Currency | Date |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1070.02 | USD | 20250916 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 971.07 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1076.62 | USD | 20250915 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.14 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1104.76 | USD | 20250915 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1280.68 | USD | 20250915 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 985.14 | USD | 20250915 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1041.43 | USD | 20250915 |