| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1196.31 | USD | 20250904 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.05 | USD | 20250904 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.19 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.97 | USD | 20250904 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1175.2 | USD | 20250904 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1210.38 | USD | 20250904 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1125.05 | USD | 20250903 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1195.36 | USD | 20250903 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1125.35 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1012.81 | USD | 20250902 |