| Vendor | Spec | Unit | Price | Currency | Date |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 985.15 | USD | 20250930 |
| Shandong Yushuo Chemical Co., Ltd. | China national standards | MT | 900.71 | USD | 20250930 |
| Hubei Seven Eight Nine Chemical Co., Ltd. | China national standards | MT | 984.68 | USD | 20250929 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 956.55 | USD | 20250929 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 900.28 | USD | 20250929 |
| Shandong Hongxin CHEMICALS Co., Ltd. | China national standards | MT | 914.35 | USD | 20250929 |
| Shandong Laya Chemical Co., Ltd. | China national standards | MT | 886.21 | USD | 20250929 |
| Hebei Risun Energy Limited | China national standards | MT | 956.55 | USD | 20250929 |
| Hebei Risun Energy Limited | China national standards | MT | 956.55 | USD | 20250929 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 956.55 | USD | 20250929 |