| Vendor | Spec | Unit | Price | Currency | Date |
| Zaozhuang Yitai Energy Technology Co., Ltd. | China national standards | MT | 394.1 | USD | 20251011 |
| Shandong Yihe Fine Chemical Co., Ltd. | China national standards | MT | 253.35 | USD | 20251011 |
| Luxi Chemical Group Co., Ltd. | China national standards | MT | 239.27 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 344.84 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 330.76 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 365.95 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 358.91 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 380.02 | USD | 20251011 |
| Shandong Langcheng Chemical Co., Ltd. | China national standards | MT | 351.87 | USD | 20251011 |