| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1081.1 | USD | 20250806 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 980.27 | USD | 20250806 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1190.33 | USD | 20250806 |
| Shandong Jinwen Chemical Co., Ltd. | China national standards | MT | 1204.33 | USD | 20250806 |
| Aite (Zhejiang) Supply Chain Management Co., Ltd. | China national standards | MT | 1120.31 | USD | 20250806 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1191.04 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1165.82 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.06 | USD | 20250805 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1205.06 | USD | 20250805 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 1191.04 | USD | 20250805 |