| Vendor | Spec | Unit | Price | Currency | Date |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 861.28 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 784.26 | USD | 20250811 |
| Shandong Junfeng New Materials Co., Ltd. | China national standards | MT | 770.25 | USD | 20250811 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 742.24 | USD | 20250811 |
| Nanjing Baitu Chemicals Co., Ltd. | China national standards | MT | 742.24 | USD | 20250811 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 784.26 | USD | 20250811 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.25 | USD | 20250811 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 756.25 | USD | 20250811 |
| Shandong Xingpeng Yongfa Chemical Co., Ltd. | China national standards | MT | 742.48 | USD | 20250810 |
| Shandong Yeyang Chemical Co., Ltd. | China national standards | MT | 770.5 | USD | 20250809 |