| Vendor | Spec | Unit | Price | Currency | Date |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.14 | USD | 20250902 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 450.14 | USD | 20250902 |
| Shandong Huize Chemical Technology Co., Ltd. | China national standards | MT | 323.54 | USD | 20250902 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 450.14 | USD | 20250902 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 351.67 | USD | 20250902 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 393.87 | USD | 20250902 |
| Shandong Qiancheng New Materials Co., Ltd. | China national standards | MT | 1040.95 | USD | 20250902 |
| Shandong Qiancheng New Materials Co., Ltd. | 90% | MT | 393.87 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 400.91 | USD | 20250902 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 405.13 | USD | 20250902 |