| Vendor | Spec | Unit | Price | Currency | Date |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 826.81 | USD | 20251203 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 826.34 | USD | 20251202 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 932.28 | USD | 20251202 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1031.16 | USD | 20251202 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1031.67 | USD | 20251201 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 840.88 | USD | 20251201 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 840.53 | USD | 20251128 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 1031.23 | USD | 20251128 |
| Shijiazhuang Bailong Chemical Co., Ltd. | China national standards | MT | 840.64 | USD | 20251127 |