| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1170.64 | USD | 20250901 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 1195.97 | USD | 20250901 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250831 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1084.05 | USD | 20250831 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250830 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1084.05 | USD | 20250830 |
| Shandong Xima Supply Chain Management Co., Ltd. | China national standards | MT | 957.34 | USD | 20250830 |
| Shandong Qiangsen Chemical Co., Ltd. | China national standards | MT | 985.5 | USD | 20250830 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 1084.05 | USD | 20250829 |
| Qingdao Shengze Chemical Co., Ltd. | China national standards | MT | 1013.66 | USD | 20250829 |