| Vendor | Spec | Unit | Price | Currency | Date |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 777.29 | USD | 20251201 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 847.95 | USD | 20251201 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 847.59 | USD | 20251128 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 847.71 | USD | 20251127 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 847.51 | USD | 20251126 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 847.15 | USD | 20251125 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 846.9 | USD | 20251124 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 846.56 | USD | 20251121 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 846.2 | USD | 20251120 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 846.6 | USD | 20251119 |