| Vendor | Spec | Unit | Price | Currency | Date |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 900.69 | USD | 20250925 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250925 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 900.69 | USD | 20250924 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250924 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 900.69 | USD | 20250923 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1027.34 | USD | 20250923 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1026.64 | USD | 20250922 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 956.32 | USD | 20250922 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 900.06 | USD | 20250922 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 956.02 | USD | 20250919 |